Microformats Wiki - User contributions [en]

implementations

2006-11-23T00:06:59Z

MJ: /* Applications / Plugins / Services / Tools */

<h1>Microformats Implementations and Implementors</h1>

This page lists the applications, plugins, sample code, services, tools as well as companies, developers and organizations which support microformats, along with the developers responsible for doing so that have chosen to be listed. This is only a partial list. If you know other companies implementing microformats, please add them and list their services and what specific microformats they support.

__TOC__

== Formats ==

Most microformat specifications have an "implementations" section, e.g.:
* [http://microformats.org/wiki/hcalendar#Implementations hCalendar], [http://microformats.org/wiki/hcard#Implementations hCard], [http://microformats.org/wiki/rel-tag#Implementations rel-tag], [http://microformats.org/wiki/vote-links#Implementations vote-links], [http://microformats.org/wiki/xoxo#Implementations XOXO] etc.

In addition, some microformat specifications have separate implementation pages:
* [[xfn-implementations]]

== Applications / Plugins / Services / Tools ==

This is an alphabetical listing of all applications, plugins (grouped with their app/tool), services and tools that implement microformats, along with the list of microformats that are supported, and the company and/or developers responsible for it.

As a user, the implementations listed below will automatically help you use microformats and help your data portability and interoperability with other apps and services.

Please help complete this list! If you know of additional apps/plugins/services/tools that support microformats, please add them!

Note: this section is only for listing specific ''implementations''. The list of ''implementors'' is in the [[implementations#Companies / Developers / Organizations|Companies / Developers / Organizations]] section below.

=== Apple ===

* [http://www.mac.com/webmail .Mac Webmail] now [http://factoryjoe.com/blog/2006/10/28/apple-embraces-microformats-in-new-mac-webmail/ supports hcard].

=== Blinksale ===
* [http://blinksale.com Blinksale] - every person and company you enter into a Blinksale account is
stored according to the Microformat hCard standard.

=== BlogMatrix ===
* [http://www.blogmatrix.com BlogMatrix] - user information marked as [[hcard|hCard]], tag directories in [[xfolk]]/[[rel-tag]], enclosures are marked as [[rel-enclosure]].
** by [http://blogmatrix.blogmatrix.com David Janes]

=== Blogmarks.net ===
* [http://www.blogmarks.net Blogmarks.net] publish user bookmarks in [[xfolk]]/[[rel-tag]].

=== Community Server ===
* [http://communityserver.org Community Server] supports tagging posts with [[rel-tag]], implements [[rel-nofollow]] on links in comments, and allows users to create link lists using [http://gmpg.org/xfn/ XFN].

=== Citycita===
* [http://www.citycita.org Citycita] supports [[hCal|hCal]] in all event pages for local social groups.
** by [http://www.citycita.org Rubio jamin]

=== Cork'd ===
* [http://corkd.com Cork'd] supports [[hcard|hCard]] for user profiles, [[hreview|hReview]] for wine reviews, along with [[rel-tag]] for tagging wines as announced in [http://www.simplebits.com/notebook/2006/06/10/wineformats.html Pairing Wine and Microformats]
** by [http://simplebits.com/ Dan Cederholm]

=== Dreamweaver ===
==== Microformats Extensions ====
* [http://www.webstandards.org/action/dwtf/microformats Dreamweaver Microformats Extensions] ([http://allinthehead.com/beta/microformats.mxp.zip download]) support authoring [[hcard|hCard]], [[hcalendar|hCalendar]], [http://gmpg.org/xfn XFN], [[rel-tag]], [[rel-license]] as [http://allinthehead.com/retro/282/microformats-in-dreamweaver announced by Drew]
** by [http://allinthehead.com Drew McLellan]

=== Drupal ===
==== Upcoming module for Drupal ====
* [http://hybernaut.com/upcoming-module Drupal Upcoming.org syndication module] emits [[hcalendar|hCalendar]]
** by [http://hybernaut.com/ Brian Del Vecchio]

=== EVDB ===
* [http://evdb.com EVDB] / [http://eventful.com Eventful] supports [[hcalendar|hCalendar]] for over 1,000,000 event listings and [[hcard|hCard]] for venues.

=== Finetoothcog ===
* [http://finetoothcog.com/site/stolen_bikes Stolen Bikes] now supports [[hcalendar|hCalendar]] for reported stolen bikes. Also provides iCal subscription.

=== Firefox ===
* [[firefox-extensions]]
* [[greasemonkey]] scripts for Firefox
*Mozilla are "brainstorming" developments for Firefox 3.0 and beyond, and have a page on microformat handling at http://wiki.mozilla.org/Firefox/Feature_Brainstorming:Microformat_Handling

==== Tails Firefox Extension ====
* [http://blog.codeeg.com/tails-firefox-extension-03/ Tails Firefox Extension 0.3] by [[implementations#Calvin_Yu|Calvin Yu]]
** Latest Release: [http://codeeg.com/tails/tails-0.3.3.xpi Tails Firefox Extension 0.3.3] (Firefox 1.4+, Flock 0.7+)

==== Tails Export Firefox Extension ====
* [https://addons.mozilla.org/firefox/2240/ Tails Firefox Extension 0.3.1] by [[implementations#Robert_de_Bruin|Robert de Bruin]]
** Latest Release: [https://addons.mozilla.org/firefox/2240/ Tails Firefox Extension 0.3.1] (Firefox 1.5+)

=== Gravatar Commenters as hCards ===
* [http://thedredge.org Andy Hume] added code to his blogging software to automatically mark-up the names and URLs of commenters on his blog with [[hcard|hCard]].
** by Andy Hume
** Andy - any chance of open sourcing your code to turn Gravatars into hCards?

=== faberNovel ===
* [http://www.fabernovel.com/contact faberNovel] supports [[hcard|hCard]]
** by Marie-Caroline Lanfranchi

=== Flickr People ===
* [http://flickr.com/ Flickr]'s profiles on its [http://flickr.com/people/tantek people] [http://flickr.com/people/tantek pages] supports both [[hcard|hCard]] and [http://gmpg.org/xfn XFN].
** by Cal Henderson

=== Flickr Photos ===
* [http://flickr.com/map/ Flickr's geo tagged photos] are marked up with the [[geo]] microformat.

=== Flock Web Browser ===
* The [http://flock.com Flock web browser] supports the [[rel-tag]] microformat.
** by [[implementations#Flock|Flock]]

=== Google Search ===
* [http://google.com/ Google Search] - supports [[rel-nofollow]]
=== Google Creative Commons Search ===
* [http://www.google.com/webhp?as_rights=(cc_publicdomain%7Ccc_attribute%7Ccc_sharealike%7Ccc_noncommercial%7Ccc_nonderived) Google Creative Commons Search] - supports [[rel-license]]

=== hCalendar creator ===
* [http://microformats.org/code/hcalendar/creator hCalendar creator] (originally [http://theryanking.com/microformats/hcalendar-creator.html published by Ryan King]) is a javascript form for creating [[hcalendar|hCalendar]] events.
** by Ryan King

=== hCard creator ===
* The open source [http://microformats.org/code/hcard/creator hCard creator] (originally [http://tantek.com/microformats/hcard-creator.html published by Tantek]) is a very simple, yet illustrative, open source user interface / form / script which creates an [[hcard|hCard]] in real-time as you type in a set of contact information.
** by Tantek Çelik

=== hKit Microformats Toolkit for PHP5 ===
* [http://allinthehead.com/hkit hKit Microformats Toolkit for PHP5] as [http://allinthehead.com/retro/291/hkit-microformats-toolkit-for-php announced by Drew McLellan]

=== hReview creator ===
* [http://microformats.org/code/hcalendar/creator hReview creator] (originally [http://theryanking.com/microformats/hreview-creator.html published by Ryan King]) is a javascript form for creating [[hreview|hReviews]].
** by Ryan King

=== Ice Rocket ===
* [http://icerocket.com] - [http://blogs.icerocket.com/tag/ supports] [[rel-tag]]

=== iChat buddy list to hCards ===
* [http://tantek.com/microformats/buddylist2hcards.html iChat buddy list to hCards] - open source AppleScript to automatically convert one's buddy list in the MacOSX iChat AIM client into a valid XHTML 1.0 Strict list of hCards.
** by Tantek Çelik

=== JSCalendar ===
* [http://web.mit.edu/glasser/www/JSCalendar/ JSCalendar] parses [[hcalendar|hCalendar]] and produces a displayable HTML table/CSS-based calendar.

=== Konqueror ===
* [http://www.konqueror.org/ Konqueror] - [http://flickr.com/photos/factoryjoe/68755089/ supports] [[hcard|hCard]]

=== Last.fm ===
* [http://last.fm Last.fm] - [http://factoryjoe.com/blog/2006/10/31/lastfm-adds-support-for-hcalendar/ Last.fm supports] [[hcalendar|hCalendar]]

=== Laughing Squid Calendar ===
* The [http://laughingsquid.com/squidlist/calendar/ Laughing Squid Calendar] events listings support [[hcalendar|hCalendar]].
** by [http://laughingsquid.com/ Laughing Squid]

===LinkedIn ===
* [http://www.linkedin.com LinkedIn] - LinkedIn includes [[hcard|hCard]] on profiles and [[hreview|hReview]] on service provider recommendations
** by [[implementations#Chris Saccheri|Chris Saccheri]]

=== LiveJournal ===
* [http://www.livejournal.com LiveJournal] - LiveJournal supports tagging posts with [[rel-tag]].

=== LJFind ===
* [http://www.ljfind.com LJ-Find] - LJFind supports tagging posts with [[rel-tag]].

=== Microformat Base ===
* [http://randomchaos.com/microformats/base/ Microformat Base]
** by [[implementations#Scott Reynen|Scott Reynen]]

=== Microformat Bookmarklet Overlay ===
* [http://leftlogic.com/info/articles/microformats_bookmarklet Microformats Bookmarklet] for Safari, Firefox and Camino, supports [[hcard|hCard]] and [[hcalendar|hCalendar]] and allows the user to import individual microformats on the fly.
** by Remy Sharp

=== Microformat Parser for Ruby ===
* [http://blog.labnotes.org/2005/11/20/microformat-parser-for-ruby/ Microformat Parser for Ruby]
** by [[implementations#Assaf Arkin|Assaf Arkin]]

=== Nature Network Boston ===
* [http://network.nature.com/boston/ Nature Network Boston], a social networking community for scientists, supports [[reltag|rel-tag]], [[hcard|hCard]] for user profiles and [[hcalendar|hCalendar]] for marking up events across the site.
** by [[implementations#Nature Publishing Group|Nature Publishing Group]]

=== Nature Protocols ===
* [http://www.nature.com/nprot/ Nature Protocols], a forum for scientists to upload and comment on protocols, supports [[hcard|hCard]] and [[XOXO]].
** by [[implementations#Nature Publishing Group|Nature Publishing Group]]

=== Nutch ===
* [http://www.mail-archive.com/nutch-dev@lucene.apache.org/msg01295.html rel-nofollow support added]
* [http://www.mail-archive.com/nutch-commits@lucene.apache.org/msg01014.html rel-tag support checked in]

=== ODEO ===
* [http://odeo.com/ ODEO] [http://odeo.com/blog/2005/07/adding-microformats-to-odeo.html noted] that they support microformats: [[rel-tag]], [[rel-enclosure]], [http://gmpg.org/xfn XFN].

=== Profiler ===
* [http://microformat.makedatamakesense.com/profiler/ Profiler] works as a proxy service adding microformat profiles to documents that appear to contain microformats.

=== RFC2629.xslt ===
* [http://greenbytes.de/tech/webdav/rfc2629.xslt rfc2629.xslt] now attempts to generate [[hcard|hCard]] information ([http://ietf.org/rfc/rfc2629 RFC2629] in an XML format for authoring RFCs and Internet Drafts, see [http://greenbytes.de/tech/webdav/rfc2629xslt/rfc2629xslt.html example document])

=== Salesforce ===
* [http://salesforce.com Salesforce] [http://flickr.com/photos/kingsleyj/175689109/ supports] [[hcard|hCard]]
** by [http://flickr.com/people/kingsleyj/ Kingsley Joseph]
==== Spanning Salesforce ====
* [http://spanningsalesforce.com/ Spanning Salesforce] supports [[hcalendar|hCalendar]].

=== Sivitools ===
<blockquote>
Sivitols is a Java library for microformats. Currently only the xFolk RC1 standard is implemented, but additional microformat support is planned. This library is being written and maintained for a tag sharing project undertaken by Video Vertigo.
</blockquote>
[http://blog.blip.tv/blog/microformats/ Annoucement], [http://pokkari.com/microformat/javadoc/ Docs]

=== SPRACI ===
* [http://www.spraci.com SPRACI] - nightlife/events - [[hcalendar|hCalendar]] published in events listings, aggregator can read hCalendar

=== Sunnyvale House Concerts ===
* [http://concerts.shrub.ca/shows Sunnyvale House Concerts] supports [[hcard|hCard]] and [[hcalendar|hCalendar]].

=== Technorati Contacts Feed Service ===
* [http://feeds.technorati.com/contacts/ Technorati Contacts Feed Service] is a deployment of [[implementations#X2V|X2V]] to convert [[hcard|hCards]] to vCard (.vcf) format.

=== Technorati Events Feed Service ===
* [http://feeds.technorati.com/events/ Technorati Events Feed Service] is a deployment of [[implementations#X2V|X2V]] to convert [[hcalendar|hCalendar]] events to iCalendar (.ics) format.

=== Technorati Microformats Search ===
* Technorati [http://kitchen.technorati.com/search/ Microformats Search]. Search for contacts ([[hcard|hCard]]), events ([[hcalendar|hCalendar]]), or reviews ([[hreview|hReview]]) published on blogs and other web sites.
** by [http://tantek.com/ Tantek Çelik], [http://theryanking.com Ryan King], [http://epeus.blogspot.com/ Kevin Marks], Josh Smith
=== Technorati Search ===
* [http://technorati.com/ Technorati] [http://technorati.com/search Search] supports and handles both [[vote-links]] and [[rel-nofollow]] for indicating whether a link should have any/positive/negative weighting towards the destination.
** by [http://technorati.com/about/staff.html Technorati Staff]
=== Technorati Tags ===
* [http://technorati.com/tags/ Technorati Tags] pages aggregate blog posts tagged with the [[rel-tag]] open tagging standard, in addition to recent tagged photos and links.

=== Textpattern ===
==== Microformats Plugin ====
* [http://placenamehere.com/TXP/pnh_mf/ Textpattern Microformats Plugin] supports authoring [[hcard|hCard]], [[hcalendar|hCalendar]], [[hreview|hReview]], [http://gmpg.org/xfn XFN], [[rel-tag]], [[rel-license]] in the [http://www.textpattern.com/ Textpattern] CMS/blogging tool
** by [http://placenamehere.com/ Chris Casciano]

=== Upcoming.org ===
* [http://upcoming.org Upcoming.org] - hCalendar support in events listings and individual events.
** by Andy Baio, Leonard Lin, Gordon Luk

=== WordPress ===
* [http://wordpress.org WordPress] supports [http://gmpg.org/xfn/ XFN] blogrolls through a very nice built-in user interface. (cf. [[xfn-implementations]])
** by Matt Mullenweg and friends
==== WP Microformatted Blogroll ====
* The [http://factorycity.net/projects/wp-microformatted-blogroll/ WP Microformatted Blogroll 0.2] Wordpress plugin by [[implementations#Chris_Messina|Chris Messina]] supports [[hcard|hCard]] and [http://gmpg.org/xfn/ XFN].
==== WP Themes ====
* [http://www.plaintxt.org/themes/sandbox/ Sandbox] is a theme for Wordpress that uses [[hatom|hAtom]].
** The theme is also available to accounts on the <username>.wordpress.com hosting service.
* [http://www.whump.com/dropbox/Strangelove.zip Strangelove] is a modification of the default Wordpress theme (Kubrick) with [[hatom|hAtom]] support.
** It points to the hAtom2Atom proxy service as the link for syndication feeds.

=== X2V ===
* [http://suda.co.uk/ brian suda] has created several XSLT files to extract microformats from HTML. From that the [http://suda.co.uk/projects/X2V/ X2V] webservice/favelet emerged. The XSLT and favelet extracts [[hcard|hCard]] and to produces .vcf (vCard) files and [[hcalendar|hCalendar]] to produce .ics (iCal) files. Also in the labs is a universal XMDP validator and a site-wide search spider that recognizes 'no-follow', 'license' and other microformats so they can be used in a more semantic way when displaying search results.

=== Yahoo Creative Commons Search ===
* [http://search.yahoo.com/cc/ Yahoo Creative Commons Search] - supports [[rel-license]] specifically to search for Creative Commons licensed content.

=== Yahoo Local ===
* [http://local.yahoo.com Yahoo local] supports [[hcard|hCard]], [[hcalendar|hCalendar]], and [[hreview|hReview]].

=== Yahoo Tech ===
* [http://tech.yahoo.com Yahoo! Tech] supports [[hreview|hReview]].

=== Yahoo UK Movies ===
* [http://movies.yahoo.co.uk Yahoo! UK Movies] supports [[hreview|hReview]].
** by Mark Norman Francis

== Validators ==
This is an alphabetical listing of tools that have been created to validate implementations, and which formats they support.

Please add to this section if you have a validator/checker, no matter which or how many microformats you test for.

=== rel-lint ===
* [http://tools.microformatic.com/help/xhtml/rel-lint/ rel-lint] supports validation of [[rel-tag|rel-tag]] and [[xfn|XFN]] by [[implementations#Drew_McLellan|Drew McLellan]]

== Companies / Developers / Organizations ==

(Considering moving all of these to an [[implementors]] page of its own).

Thanks to all of the hardworking developers and innovative companies and organizations for supporting microformats.

This is an alphabetical listing of all companies, developers (by last name) and organizations who have built and shipped at least one implementation (see above for details of each implementation) that users can use.

Please help complete this list! If you have coded support for microformats and don't see your name, add it! If your company supports microformats in its applications, add it!

Note: please add direct links to specific applications, plugins, services, or tools to the list of [[implementations#Applications / Plugins / Services / Tools|Applications / Plugins / Services / Tools]] and then link to those from their implementor with a fragment identifier link, e.g. to link to the "Cork'd" wine review community:
* <nowiki>[[implementations#Cork'd|Cork'd]]</nowiki>
Similarly, for additional sites, put direct links to them in the [[implementations#Additional Sites|Additional Sites]] section and then link to them from their implementor with a fragment identifier link.

=== Andy Hume ===
* [[implementations#Andy_Hume_Blog|Andy Hume Blog]]

=== Assaf Arkin ===
* [[implementations#Microformat_Parser_for_Ruby|Microformat Parser for Ruby]]

=== Kent Brewster ===
* [http://www.mindsack.com/?page_id=39 Extensible friends] -- JSON + XFN and bookmarklet

=== Robert de Bruin ===
* [http://bordewolf.blogspot.com/ Robert de Bruin' s blog: Bor de Wolf]
* [[implementations#Tails_Export_Firefox_Extension|Tails Export Firefox Extension]]

=== Chris Casciano ===
* [[implementations#Microformats_Plugin|Textpattern Microformats Plugin]]

=== Dan Cederholm ===
* [[implementations#Cork'd|Cork'd]]

=== Flock ===
* [[implementations#Flock Web Browser|Flock Web Browser]]

=== Google ===
* [[implementations#Google_Search|Google Search]]
* [[implementations#Google_Creative_Commons_Search|Google Creative Commons Search]]

=== Bill Humphries ===
* [[implementations#WP_Themes|Strangelove Wordpress Theme w/hAtom Support]]

=== David Janes ===
* [[implementations#BlogMatrix|BlogMatrix]]

=== Kingsley Joseph ===
[http://flickr.com/people/kingsleyj/ Kingsley Joseph]:
* [[implementations#Salesforce|Salesforce]]

=== Marie-Caroline Lanfranchi ===
[http://flickr.com/people/mclanfranchi/ Marie-Caroline Lanfranchi]:
* [[implementations#faberNovel|faberNovel]]

=== Laughing Squid ===
* [[implementations#Laughing_Squid_Calendar|Laughing Squid Calendar]]

=== Drew McLellan ===
* [[implementations#Microformats_Extensions|Microformats Extensions]]
* [[implementations#hKit_Microformats_Toolkit_for_PHP5|hKit Microformats Toolkit for PHP5]]
* [[implementations#rel-lint|rel-lint Validator Tool]]

=== Chris Messina ===
* [[implementations#WP_Microformatted_Blogroll|WP Microformatted Blogroll]]

=== Nature Publishing Group ===
* Nature Publishing Group are steadily rolling out microformats across their sites and titles. Current implementations include the following online services:
** [[implementations#Nature Network Boston|Nature Network Boston]]
** [[implementations#Nature Protocols|Nature Protocols]]
* as well the following additional site(s):
** [[implementations#Nature Home Page|Nature Home Page]]

=== Scott Reynen ===
* [[implementations#Microformat_Base|Microformat Base]]

=== Chris Saccheri ===
* [[implementations#LinkedIn|LinkedIn]]

=== SixApart ===
* [[implementations#LiveJournal|LiveJournal]]

=== Brian Suda ===
* [[implementations#X2V|X2V]]

=== Technorati ===
* [[implementations#Technorati_Contacts_Feed_Service|Technorati Contacts Feed Service]]
* [[implementations#Technorati_Events_Feed_Service|Technorati Events Feed Service]]
* [[implementations#Technorati_Microformats_Search|Technorati Microformats Search]]
* [[implementations#Technorati_Search|Technorati Search]]
* [[implementations#Technorati_Tags|Technorati Tags]]

=== Yahoo ===
* [[implementations#Flickr_People|Flickr People]]
* [[implementations#Upcoming.org|Upcoming]]
* [[implementations#Yahoo_Creative_Commons_Search|Yahoo Creative Commons Search]]
* [[implementations#Yahoo_Local|Yahoo Local]]
* [[implementations#Yahoo_Tech|Yahoo Tech]]
* [[implementations#Yahoo_UK_Movies|Yahoo UK Movies]]

=== Scott Allan Wallick ===
* [[implementations#WP_Themes|Sandbox Wordpress Theme w/hAtom Support]]

=== Calvin Yu ===
* [http://blog.codeeg.com/ Calvin Yu blog: Don't Forget to Plant It!]
* [[implementations#Tails_Firefox_Extension|Tails Firefox Extension]]

== Additional Sites ==

Additional static/read-only sites which enhanced their content with microformats.

=== Avon ===
* [http://avon.com/ Avon] - publishes all 40,000+ Avon representatives' contact info with the [[hcard|hCard]] microformat.

=== Flock About Page ===
* [http://flock.com/about Flock About] page supports [[hcard|hCard]] microformat.
** by [[implementations#Flock|Flock]]

=== Iowa Military Veterans Band ===
* [http://www.iowamilitaryveteransband.com/members/ Iowa Military Veterans Band]

=== Nature Home Page ===
* [http://www.nature.com/ Nature homepage], uses [[XOXO]].
** by [[implementations#Nature Publishing Group|Nature Publishing Group]]

=== Sunnyvale House Concerts ===
* [http://concerts.shrub.ca/shows Sunnyvale House Concerts] supports [[hcard|hCard]] and [[hcalendar|hCalendar]].

=== Technorati About Page ===
* The [http://technorati.com/about/ Technorati About page] has contact information marked up with [[hcard|hCard]]. By [[implementations#Technorati|Technorati]]
=== Technorati Press Page ===
* The [http://technorati.com/press/ Technorati Press page] also has an [[hcard|hCard]]. By [[implementations#Technorati|Technorati]]
=== Technorati Staff Page ===
* The [http://technorati.com/about/staff.html Technorati Staff page] has many [[hcard|hCards]]. By [[implementations#Technorati|Technorati]]
=== University of Bath ===
* [http://www.bath.ac.uk/ University of Bath] [http://www.bath.ac.uk/contact/ Person Finder] supports [[hcard|hCard]], e.g. see [http://www.bath.ac.uk/person/760874 Mrs A Smith] page.

== Needs Fixing ==

The following have been moved from the sections above due to problems, stated below:

=== Web Essentials ===
* [http://we05.com/ Web Essentials] - supports [[hcard|hCard]] and [[hcalendar|hCalendar]], e.g. in their [http://we05.com/presenters.cfm list of presenters] and [http://we05.com/program.cfm program schedule].
** John McKerrell tried to look at the site on 24th October 2006 but could not access the site, server didn't seem to be up.

== Other ==
Some notes on initial thoughts around [[implementation-guidelines|Guidelines and Strategies for Implementing Microformats]]

hcalendar

2006-11-22T05:39:22Z

MJ: /* Examples in the wild */

<h1> hCalendar </h1>

hCalendar is a simple, open, distributed calendaring and events format, based on the iCalendar standard ([http://www.ietf.org/rfc/rfc2445.txt RFC2445]), suitable for embedding in (X)HTML, Atom, RSS, and arbitrary XML. hCalendar is one of several open [[microformats|microformat]] standards.

Want to get started with writing an [[hcalendar|hCalendar]] event? Use the [http://microformats.org/code/hcalendar/creator hCalendar creator] to write up an event and publish it, or follow the [[hcalendar-authoring|hCalendar authoring tips]] to add hCalendar markup to your page of upcoming events or events you mention in blog posts, wikis, etc.

__TOC__

== Specification ==

; Editor : [http://tantek.com/ Tantek Çelik] ([http://technorati.com Technorati, Inc])
; Authors : [http://tantek.com/ Tantek Çelik], [http://technorati.com Technorati, Inc]
: [http://suda.co.uk/ Brian Suda]

=== Copyright ===
{{MicroFormatCopyrightStatement2004}}

=== Patents ===
{{MicroFormatPatentStatement}}

=== Inspiration and Acknowledgments ===
Thanks to:
* Adam Bosworth for leading the [http://wiki.oreillynet.com/foocamp04/index.cgi?HTMLForCalendars FOO Camp 2004 HTML For Calendars presentation] which brought together a critical mass of interested parties.

== Introduction ==
The iCalendar standard ([http://www.ietf.org/rfc/rfc2445.txt RFC2445]), has been broadly interoperably implemented (e.g. Apple's "iCal" application built into MacOSX).

In addition, bloggers often discuss events on their blogs -- upcoming events, writeups of past events, etc. With just a tad bit of structure, bloggers can discuss events in their blog(s) in such a way that spiders and other aggregators can retrieve such events, automatically convert them to iCalendar, and use them in any iCalendar application or service.

This specification introduces the '''hCalendar''' format, which is a 1:1 representation of the aforementioned iCalendar standard, in semantic XHTML. Bloggers can both embed hCalendar events directly in their web pages, and style them with CSS to make them appear as desired. In addition, hCalendar enables applications to retrieve information about such events directly from web pages without having to reference a separate file.

== Semantic XHTML Design Principles ==

{{semantic-xhtml-design-principles}}

== Format ==

=== In General ===

The iCalendar standard ([http://www.ietf.org/rfc/rfc2445.txt RFC2445]) forms the basis of hCalendar.

Note: the editor and authors of this specification are tracking the [http://lists.osafoundation.org/pipermail/ietf-calsify/ "iCal-Basic" effort] and intend to base the core hCalendar profile on iCal-Basic. See references for a link to the current draft.

The basic format of hCalendar is to use iCalendar object/property names in lower-case for class names, and to map the nesting of iCalendar objects directly into nested XHTML.

=== More Semantic Equivalents ===

However, for some properties there is a more semantic equivalent, and therefore they get special treatment, e.g.:
* <code>URL</code> in iCalendar becomes <code><a class="url" href="...">...</a></code> inside the element with <code>class="vevent"</code> in hCalendar.
* <code>ATTENDEE</code>, <code>CONTACT</code>, and <code>ORGANIZER</code> in iCalendar may be represented by an [[hcard|hCard]] in hCalendar .
* A named <code>LOCATION</code> (potentially with an address and/or geo) in iCalendar may be represented by a nested [[hcard|hCard]] in hCalendar. Similarly, an address <code>LOCATION</code> may be represented by an [[adr]], and a geo (latitude and longitude) <code>LOCATION</code> may be represented by a [[geo]].
* <code>UID</code> in iCalendar simply becomes another semantic applied to a specific URL for an hCalendar event.

=== Singular vs. Plural Properties ===

For properties which are singular (e.g. "N" and "FN" from vCard), the first descendant element with that class should take effect, any others being ignored.

For properties which can be plural (e.g. "TEL" from vCard), each class instance should create a instance of that property. Plural properties with subtypes (e.g. TEL with WORK, HOME, CELL from vCard) can be optimized to share a common element for the property itself, with each instance of subtype being an appropriately classed descendant of the property element.

==== Plural Properties Singularized ====

Since plural property names become their singular equivalents, even if the original plural property permitted only a single value with multiple components, those multiple components are represented each with their own singularly named property and the the property is effectively multivalued and subject to the above treatment of multivalued properties.

=== Human vs. Machine readable ===
If an <code><nowiki><abbr></nowiki></code> element is used for a property, then the '<code>title</code>' attribute of the <code><nowiki><abbr></nowiki></code> element is the value of the property, instead of the contents of the element, which instead provide a human presentable version of the value. This specification recommends that such <code><nowiki><abbr></nowiki></code> elements be used for the following iCalendar properties:
* DTSTART, DTEND, DURATION, RDATE, RRULE

== Example ==

Here is a sample event in an iCalendar:
<pre><nowiki>
BEGIN:VCALENDAR
PRODID:-//XYZproduct//EN
VERSION:2.0
BEGIN:VEVENT
URL:http://www.web2con.com/
DTSTART:20051005
DTEND:20051008
SUMMARY:Web 2.0 Conference
LOCATION:Argent Hotel\, San Francisco\, CA
END:VEVENT
END:VCALENDAR
</nowiki></pre>
and an equivalent event in hCalendar format with various elements optimized appropriately. See [[hcalendar-example1-steps]] for the derivation.

<pre><nowiki>
<span class="vevent">
<a class="url" href="http://www.web2con.com/">
<span class="summary">Web 2.0 Conference</span>:
<abbr class="dtstart" title="2005-10-05">October 5</abbr>-
<abbr class="dtend" title="2005-10-08">7</abbr>,
at the <span class="location">Argent Hotel, San Francisco, CA</span>
</a>
</span>
</nowiki></pre>
which could be displayed as:

[http://www.web2con.com/ Web 2.0 Conference: October 5-7, at the Argent Hotel, San Francisco, CA]

The following example specifies a scheduled meeting that begins
at 8:30 AM EST on March 12, 1998 and ends at 9:30 AM EST on March 12,
1998.

<pre><nowiki>
BEGIN:VCALENDAR
BEGIN:VEVENT
UID:guid-1.host1.com
DTSTAMP:19980309T231000Z
DESCRIPTION:Project XYZ Review Meeting
SUMMARY:XYZ Project Review
DTSTART:19980312T133000Z
DTEND:19980312T143000Z
LOCATION:1CP Conference Room 4350
END:VEVENT
END:VCALENDAR
</nowiki></pre>

The equivalent in hCalendar:

<pre><nowiki>
<div class="vevent">
<h3 class="summary">XYZ Project Review</h3>
<p class="description">Project XYZ Review Meeting</p>
<p>To held on <abbr class="dtstart" title="1998-03-12T08:30:00-05:00">12 March 1998 from 8:30am EST</abbr>
until <abbr class="dtend" title="1998-03-12T09:30:00-05:00">9:30am EST</abbr></p>
<p>Location: <span class="location">1CP Conference Room 4350</span></p>
<small>Booked by: <span class="uid">guid-1.host1.com</span> on <abbr class="dtstamp" title="19980309T231000Z">9 Mar 1998 6:00pm</abbr></small>
</div>
</nowiki></pre>

This could be displayed as:

----

<div class="vevent">
<h3 class="summary">XYZ Project Review</h3>
<p class="description">Project XYZ Review Meeting</p>
<p>To held on <abbr class="dtstart" title="1998-03-12T08:30:00-05:00">12 March 1998 from 8:30am EST</abbr>
until <abbr class="dtend" title="1998-03-12T09:30:00-05:00">9:30am EST</abbr></p>
<p>Location: <span class="location">1CP Conference Room 4350</span></p>
<small>Booked by: <span class="uid">guid-1.host1.com</span> on
<abbr class="dtstamp" title="19980309T231000Z">9 Mar 1998 6:00pm</abbr></small></div>

----

Note 1: The product information is not necessary since hCalendar is an interchange format. When transforming hCalendar back into iCalendar, the transforming engine should add its own product ID.

Note 2: A surrounding <code><nowiki><span class="vcalendar"></nowiki></code> element is optional, and is left out as such. It is optional since the context of a vcalendar is implied when a vevent is encountered. The implied context/scope is that of the document. Authors may explicitly use elements with class="vcalendar" to wrap sets of vevents that all belong to the same calendar, e.g. when publishing multiple calendars on the same page.

Note 3: The version information is unnecessary in hCalendar markup directly since the version will be defined by the profile of hCalendar that is used/referred to in the 'profile' attribute of the <head> element.

Note 4: ISO8601 dates (required by iCalendar) are not very human friendly. In addition, the year is often understood implicitly by humans from the context. Thus <code><nowiki><abbr></nowiki></code> elements are used to simultaneously provide a human friendly date and/or time in the visible contents of the element, while placing the respective machine parsable comprehensive ISO8601 datetime in the 'title' attribute.
The notation <code>YYYY-MM-DDThh:mm:ss</code> should be used for better readability, following the format of RFC 3339.

Note 5: The difference between the DTEND ISO8601 date (2005-10-08) and the human readable date (7) is NOT a mistake. [http://lists.osafoundation.org/pipermail/ietf-calsify/2005-September/000769.html DTEND is exclusive], meaning, that the event ends just before the DTEND. Thus for events which start on one day and end on another day, the DTEND date must be specified as the day after the day that a human would say is the last day of the event.

Note 6: The location in this example contains implicit structure (venue name, city, state) which could be marked up explicitly as an [[hcard|hCard]]. See [http://microformats.org/wiki/hcalendar-brainstorming#hCard_locations hCalendar brainstorming: hCard locations] for a informative explanation of how to do this.

See [[hcalendar-examples]] for more hCalendar examples

== Examples in the wild ==
This section is '''informative'''.

The following sites have implemented hCalendar, and thus are a great place to start for anyone looking for examples "in the wild" to try parsing, indexing, organizing etc. If events on your pages are marked up with hCalendar, feel free to add it to the top of this list. Once the list grows too big, we'll make a separate wiki page.

=== New Examples ===
Please add new examples to this section.

* [http://finetoothcog.com/site/stolen_bikes Finetoothcog] uses hCalendar to markup when bikes are stolen.
* [https://www.urbanbody.com/information/contact-us Urban Body Men's Clothing] uses hCalendar for business hours and hCard for business locations.
* [http://www.infoiasi.ro The website of the Faculty of Computer Science], "A. I. Cuza" University Iaşi, Romania, uses hCalendar to markup events.
* [http://www.crosbyheritage.co.uk/events/ Colin Crosby Heritage Tours] uses hCalendar to markup events.
* [http://www.facebook.com Facebook] use hCalendar to markup events.
* [http://www.newbury-college.ac.uk/ Newbury College UK] uses a smattering of hCalendar and hCard
* [http://07.pagesd.info/ardeche/agenda.aspx 07.pagesd.info] uses hCalendar and hCard to mark up events of the Ardèche département in France.
* [http://climbtothestars.org Stephanie Booth] announced the [http://climbtothestars.org/archives/2006/09/14/microformats-et-bloggy-friday-doctobre/ Bloggy Friday for October 2006] using hCalendar.
* The [http://www.westmidlandbirdclub.com/ West Midland Bird Club], in the English Midlands, uses hCal (with nested hCard) on its [http://www.westmidlandbirdclub.com/diary/ diary of birding events].
* [http://www.comtec-ars.com/press-releases/ ComTec audience response systems' press releases] use hCalendar as a method to organize by title and date.
* [http://webdirections.org/program/ The Web Directions Conference (Sydney Australia)] uses hCalendar for their program. It uses axis and headers for events in a table, and demonstrates how easy it is to make the whole thing downloadable using X2V.
* [http://www.thestreet.org.au/ The Street Theatre (Canberra, Australia)] now uses hCalendar for performances on its [http://www.thestreet.org.au/whats_on.htm What's On] page.
* [http://www.clacksweb.org.uk Clackmannanshire Council] uses hCalendar on its [http://www.clacksweb.org.uk/community/events/ event diary] listing pages and individual event pages.
* [http://www.markthisdate.com/ Calendarportal MarkThisDate.com] now uses hCalendar for all calendars. On our website visitors can add calendars and download calendars to Outlook, Lotus Notes, iCal, Netvibes, 30Boxes, Google Calendar and many others. Over 600 calendars were already uploaded.
* [http://mogue.jp/ mogue] uses hCalendar at [http://mogue.jp/event/1000/ event detail] pages.
* [http://www.gustavus.edu/events/nobelconference/2006/schedule.cfm 2006 Nobel Conference] uses hCalendar for the conference schedule
* [http://www.geekinthepark.co.uk Geek in the Park] uses hCalendar for the event information. -- by [[User:Trovster|trovster]]
* [http://www.besancon.fr/ official site of Besançon (France)] for its events
* [http://2006.dconstruct.org/schedule/ Conference schedule for d.Construct 2006] is published using hCalendar.
* [http://local.yahoo.com Yahoo Local] now supports hCalendar
* We used hcalendar for the [http://www.fuckparade.org/flyer/2006/ F’parade flyer 2006], a counter demonstration to the Love Parade in Berlin, alas the '''Firefox tails extension''' doesn't get a summary when it's an alt-text in an image.
* [http://www.harper-adams.ac.uk/press/events.cfm Harper Adams University College] uses hCalendar to mark up all University events on the Homepage and Events Calendar page.
* [http://www.capital.edu/ Capital University] uses hCalendar on multiple pages to provide feeds of events, relevant to page content
* [http://www.thesession.org/events/ The Session events] uses hCalendar to mark up concerts, festivals and workshops related to Irish traditional music.
* [http://rubyandrails.org/usergroups/newcastle ncl.rb] uses hCalendar to mark up new meetings.
* [http://www.worldcupkickoff.com/ World Cup KickOff] where you can download and keep all the fixtures you are interested in so you will never miss a single game of the 2006 football World Cup!
** This link was on the [http://www.lifehacker.com/software/sports/world-cup-start-times-for-ical-etc-175393.php Lifehackers site] and made its way to the yahoo news site:

Mon May 22, 4:00 PM ET
The World Cup, one of the world's most watched sporting events, is almost upon us. If you've ever tried to follow your favorite team through the Cup you know that it can sometimes be difficult to know when they're on. World Cup Kickoff can help.

World Cup KickOff is all you will ever need for knowing all the match details for the upcoming World Cup 2006. Whether you use your mobile phone, MS Outlook, Apple iCal or Mozilla Calendar, you can download and keep all the fixtures you are interested in so you will never miss a single game!
ADVERTISEMENT

Next tip? We'll show you how to get up at 2 AM to watch your matches. ;0) Thanks to Tom for the tip!

* [http://gross.org.za/calendar GROSSUG Calendar] - Uses hCalendar to mark up meetings and other events.
* [http://www.webanalyticsassociation.org/en/calendarevents/search.asp Web Analytics Association] - hCalendar microformat is in place on all Tendenci sites on the calendar events search page and consolidated list page.
* [http://www.tendenci.com/en/calendarevents/search.asp Tendenci Calendar Events] with hCalendar
* [http://www.argolon.com/2006/04/17/web20-conference-in-dublin/ Web2.0 Conference in Dublin] hCalendar event
* [http://www.meetup.com/ Meetup.com] has marked up [http://www.meetup.com/cities/us/ny/new_york city event calendars], [http://photo.meetup.com/100/events/ group event lists], and [http://www.meetup.com/ signed-in homepages] with hCalendar.
* [http://ukwindsurfing.com/ ukwindsurfing.com] has marked upcoming events with hCalendar, and the [http://ukwindsurfing.com/events/ events page] in a table.
* [http://ocono.com/ ocono.com] has marked up it's "Upcoming Events" list with hCalendar.
* [http://www.austinbloggers.org/ Austin Bloggers] has marked up their "Upcoming Events" box with hCalendar ([http://www.austinbloggers.org/blog/a/001123.html announcement]).
* Ning's cloneable Group app has [[hcalendar|hCalendar]] markup on its [http://group.ning.com/index.php?controller=event&action=list event calendar] and [http://group.ning.com/index.php?controller=event&action=view&id=727220 event detail] pages.
* [http://tantek.com/microformats/2006/03-01-TechPlenAgenda.html Agenda: W3C Technical Plenary Day, March 1 2006] has [[hcard|hCard]] and [[hcalendar|hCalendar]] markup. ([http://www.w3.org/2006/03/01-TechPlenAgenda.html original here]).
* The National Arbor Day Foundation has started using hCalendars for their [http://arborday.org/programs/conferences/communityforestry/index.cfm upcoming] [http://arborday.org/programs/conferences/hazardtrees-treeplanting/ conferences].
* [http://www.stateofflux.com/ State of Flux street art site] has started adding events in hCalendar format
* The [http://barcamp.org/#BarCamps BarCamp home page lists upcoming BarCamps marked up with hCalendar] and even has a "Subscribe..." link.
* [http://www.w3.org/2005/12/allgroupoverview.html 2006 W3C Technical Plenary Week] has marked up the schedule and events for the week with hCalendar.
* [http://www.code4lib.org/2006/schedule code4lib Conference 2006 Schedule] is marked up with hCalendar as [http://www.code4lib.org/node/65 announced on their blog].
* [http://grouper.ieee.org/groups/754 IEEE 754 Working Group] - trying hCalendar for upcoming meetings.
* [http://www.pehuen.org/node/494 Elecciones 2005 Chile] - the first spanish language hCalendar event found in the wild.
* [http://www.codewitch.org/it/2005/11/17/no-creative-commons-no-party/ Giocolando » No Creative Commons? No Party!] is marked up with hCalendar
* [http://www.cmprofessionals.org/events/calendar.html CM Pros Events Calendar] by Bob Doyle
* [http://www.midgard-project.org/community/events/ Midgard CMS Event calendar] - as [http://bergie.iki.fi/blog/new-event-calendar-for-midcom.html blogged by Henri Bergius]
* [http://www.iowamilitaryveteransband.com/schedule/ Iowa Military Veterans Band Schedule] - hCalendar markup [http://weblog.randomchaos.com/archive/2005/10/24/Microformats/ added by Scott Reynen]
* [http://www.funfairgames.net/weblog/posts/00000011.html Upcoming events on Jason A.R. Moody Amusements Weblog] posted by Jason Moody on 15 Oct 2005. [http://www.funfairgames.net/weblog/index.html His weblog] in general has hCalendar events posted inside the blog posts.
* [http://tantek.com/microformats/2005/syndicate/tracks-sessions-schedule.html Syndicate - Tracks & Sessions]
* [http://tantek.com/microformats/2005/web2/program.html Web 2.0 Conference schedule page marked up with hCalendar]
* [http://www.thisiscmon.com/ C'MON] is a rock band from Canada, and their [http://www.thisiscmon.com/shows/ tour dates] have been marked up by [http://www.d2digitalmedia.com/ Ray Dickman] with hCalendar.
* [http://ifreebusy.com/ ifreebusy.com] will display freebusy information using hCalendar. See this [http://ifreebusy.com/neiljensen/freebusy/ example].
* [http://we05.com/ Web Essentials 05] has marked up their [http://we05.com/program.cfm program schedule table with hCalendar], using the 'axis' and 'headers' attributes.
* [http://www.asdvbonaparte.nl/ ASDV Bonaparte] is a Dutch debating society. Their events calendar has been marked up with the hCalendar conventions.
* [http://chocnvodka.blogware.com/blog Suw Charman] has marked up [http://suw.org.uk/archives/category/events/ her events] with hCalendar.
* [http://www.blogbusinesssummit.com/ Blog Business Summit] has published their [http://www.blogbusinesssummit.com/details.htm event details] marked up with hCalendar.
* [http://eventful.com Eventful.com] publishes all events with hCalendar and venues with [[hcard|hCard]]. Took them only 15 minutes to implement both! Their Atom feeds also contain hCalendar/hCard.
* [http://upcoming.org Upcoming.org] publishes all events and lists of events with hCalendar. Took them only an hour to add hCalendar support to the site.
* The [http://laughingsquid.com/squidlist/calendar/ Laughing Squid Calendar] events, [http://laughingsquid.com/squidlist/calendar/9949/2005/5/9 e.g. this party], now supports hCalendar.
* [http://paulschreiber.com/ Paul] Schreiber's [http://concerts.shrub.ca/ Sunnyvale House Concerts] site publishes hCalendar event information for upcoming concerts. In addition the [http://concerts.shrub.ca/shows Past Shows] page contains hCalendar events for all past concerts.
* [http://www.complexspiral.com/ Complex Spiral Consulting], both in the "Events" box on left side, and the separate [http://www.complexspiral.com/events/ Events page].
* [http://tantek.com/log Tantek's Thoughts], specifically the "Events" roll in the right-most column.
* [http://suda.co.uk/projects/holidays/ Lesser Known Holidays], a list of holidays on [http://suda.co.uk suda.co.uk] that can be imported via iCal and hCal so you can compare actual transformation versus intended.
* [http://norman.walsh.name/2005/itinerary/ Norm Walsh's travel schedule] use hCalendar as well as GRDDL.
* [http://www.policyawareweb.org/2005/ftf2/paw-mtg Policy Aware Web (PAW) Project Meeting] uses hCalendar to record date-related decisions, and uses a vtodo microformat to record action items.
* The [http://lufgi4.informatik.rwth-aachen.de Laboratory for Dependable Distributed Systems] publishes it's [http://lufgi4.informatik.rwth-aachen.de/cfps list of notable CfPs on dependability and security] with hCalendar-todo elements.
* The [http://laughingsquid.com/laughing-squid-10th-anniversary-party/ Laughing Squid 10th Anniversary Party] has an hcalendar page.
* SPRACI has hcalendar versions of its nightlife/clubbing/gigs/festivals listings for many cities worldwide - eg: [http://www.spraci.com/listhcalendar.php?parea=sydney&category=all Events in Sydney] (check the [http://www.spraci.com/api/ API] pages in the faq section of [http://www.spraci.com/ SPRACI] for more info about the area/city keywords and category tags to use to get data for your city/categories
* WWF-Australia events calendars: [http://wwf.org.au/act/events/ What's on], [http://wwf.org.au/act/volunteer/ Volunteer]
* [http://rubyholic.com rubyholic] uses hCalendar to publish calendars for ruby groups.
* [http://www.bath.ac.uk/whats-on/ University of Bath What's On] uses hCalendar on individual event pages
* The [http://www.kiez-ev.de/ Kiez] is a small cinema and has published its [http://www.kiez-ev.de/programm program] marked up with hCalendar

=== Examples with some problems ===
* [http://www.theatrestudies.llc.ed.ac.uk/ Theatre Studies: European Theatre] at the University of Edinburgh uses hCalendar to markup news and events on the index page.
**Uses "display:none" on image. [[User:AndyMabbett|Andy Mabbett]] 15:32, 13 Nov 2006 (PST)
* [http://www.bokle.de/ s'Bokle] is a German music pub. Their events calendar has been marked up with hCalendar.
** improper use of rrule --[[User:RyanKing|RyanKing]] 16:04, 6 Jan 2006 (PST)
* [http://plan9.tryphon.org/nancy/list Plan9] - Uses hCalendar to mark up events !
** dtstart/dtend are implemented on span element [[User:TomArmitage|Tom Armitage]] June 23, 2006
* [http://www.socaltech.com socalTECH] is a news and information site. Their front page event listing is marked up with hCalendar.
** dtstart/dtend implemented on span element [[User:TomArmitage|Tom Armitage]] June 23, 2006
* [http://www.multipack.co.uk The Multipack] features a vevent for the next meeting information.
** dtstart/dtend are implemented on em element [[User:TomArmitage|Tom Armitage]] June 23, 2006
* [http://paulschreiber.com/ Paul] Schreiber's [http://iceoasis.shrub.ca/ unofficial schedule site] publishes hCalendar information for upcoming hockey games at [http://www.iceoasis.com/ Ice Oasis]
** dtstart/dtend are implemented on td element [[User:TomArmitage|Tom Armitage]] June 23, 2006

- whilst Tails parses dtstart/dtend on <em>any</em> element, technically it really needs to be on abbr. Technorati Microformats Search only looks for the title element on <code><nowiki><abbr></nowiki></code> tags, for instance.

== Implementations ==
This section is '''informative'''.

The following implementations have been developed which either generate or parse hCalendars. If you have an hCalendar implementation, feel free to add it to the top of this list. Once the list grows too big, we'll make a separate wiki page.

=== Authoring ===
Implementations you can use to author, create, and publish hCalendar events.

==== Blogging and CMS tools ====
;Midgard CMS : [http://www.midgard-project.org/documentation/net-nemein-calendar/ Midgard CMS - net.nemein.calendar] - as [http://bergie.iki.fi/blog/new-event-calendar-for-midcom.html blogged by Henri Bergius]

;Drupal module : [http://hybernaut.com/upcoming-hcal Drupal Upcoming.org syndication module emits hCalendar]
;MovableType and WordPress plug-ins : [http://structuredblogging.org/formats.php StructuredBlogging] is a set of plugins [http://structuredblogging.org/structuredblogging-wp-latest.zip for WordPress] and [http://structuredblogging.org/structuredblogging-wp-latest.zip for MovableType] that supports embedding hCalendar and other microformats in templates and blog posts.
;Textpattern plug-in : [http://placenamehere.com/TXP/pnh_mf/ pnh_mf] is a plugin for [http://textpattern.com/ Textpattern] that supports embedding hCalendar and other microformats in templates and blog posts. Written by [http://placenamehere.com/ Chris Casciano].

==== Browser scripts and plug-ins ====
Browser plugins that work with existing authoring tools:
; Any browser with javascript and a little bit of CSS : [http://microformats.org/code/hcalendar/creator microformats.org hCalendar creator] (see also original: [http://theryanking.com/ Ryan King] has an [http://theryanking.com/microformats/hcalendar-creator.html hCalendar creator]).
; Firefox Greasemonkey user script hCalendar creator : [http://www.decafbad.com/blog/2005/06/08/greasemonkey_magic magic_hcalendar Greasemonkey user script by Les Orchard] - allows easy form entry of an event into any textarea, e.g. into a blog post text area.
; Firefox Greasemonkey user script hCalendar to Google Calendar: [http://torrez.us Elias Torres] has created a [http://torrez.us/archives/2006/04/13/431/ simple script] that will parse hCalendar entries and create a link to add event to [http://www.google.com/calendar/ Google Calendar's] service. Based on [http://virtuelvis.com/archives/2005/11/learn-to-love-microformats George's] and [http://virtuelvis.com/archives/2005/11/learn-to-love-microformats Arve's] work.

==== Desktop Authoring Tools ====
;Dreamweaver Extension : [http://www.webstandards.org/action/dwtf/microformats/ Extension suite] for Dreamweaver 8 from the [http://webstandards.org/ Web Standards Project].
;xfy :
In [https://www.xfytec.com/community/ xfy Community], there are some hCalendar implementations.

* [https://www.xfytec.com/community/modules/mydownloads/singlefile.php?cid=15&lid=25 hCalendar via RSS] parses an RSS feed, retrieves XHTML documents linked from that feed, and syndicates hCalendars into a calendar view.
* [https://www.xfytec.com/community/modules/mydownloads/singlefile.php?cid=19&lid=23 hCalendar Marker XVCD] helps to mark up an event information in XHTML document with hCalendar.
* [https://www.xfytec.com/community/modules/mydownloads/singlefile.php?cid=15&lid=17 Simple RDF Calendar XVCD] is a schedule tool which uses RDF Calendar format. It also converts RDF Calendar format to iCalendar and hCalendar format.

=== Search and Discovery ===

* [http://kitchen.technorati.com/search Technorati Microformats Search] indexes [[hcard|hCard]], [[hcalendar|hCalendar]], and [[hreview|hReview]] as [http://tantek.com/log/2006/05.html#d31t1802 announced by Tantek].
* [http://leftlogic.com/info/articles/microformats_bookmarklet Microformats Bookmarklet] is a bookmarklet designed for Safari (works in Firefox and Camino) that overlays on the current page to allow users to import individual [[hcard|hCards]] or [[hcalendar|hCalendars]]. Written by [http://leftlogic.com Remy Sharp].

=== Conversion and Import ===
Implementations you can use to importing into a Calendar Application, typically by converting hCalendar to iCalendar/vCalendar.

==== Web Services ====
These return iCalendar (.ics) and other calendar formats for easy importing into typical calendar programs or other processing.
* [http://feeds.technorati.com/events Technorati Events Feed service] uses X2V library to parse hCalendar and return iCalendar (.ics). Note friendly URL, e.g. http://feeds.technorati.com/events/http%3A//microformats.org
* [http://suda.co.uk/projects/X2V/ X2V] parses hCalendar and produces a .ics (iCalendar) stream. Note: needs to be updated to track changes in the specification as they occur.
* [http://lifelint.net/ Life Lint Parser] parses hCalendar and produces .ics, .rdf and debugging information and attempts to be more fully compliant to the iCal standard than previous implementations. It can be used in the same manner as X2V. Can output iCal (w optional Outlook 2002 compat), and RDF.
* [http://spanningsalesforce.com/ Spanning Salesforce] produces hCalendar-enabled RSS feeds and .ics calendars from Salesforce.com.
* [http://makedatamakesense.com/myspace/event/ MySpace Events RSS Creator] creates RSS feeds of MySpace events with hCalendar markup.

==== Firefox Greasemonkey Plugins ====
* [http://george.hotelling.net/90percent/ George] has built a [http://george.hotelling.net/90percent/geekery/greasemonkey_and_microformats.php Greasemonkey user script that detects hCalendar events and allows users to easily add them to their calendar application(s)].
* [http://inside.glnetworks.de/ Martin Rehfeld] has updated the work of [http://blogmatrix.blogmatrix.com/ David Janes] and produced a [[Greasemonkey]] [http://inside.glnetworks.de/2006/06/05/microformats-have-arrived-in-firefox-15-greasemonkey-06/ script] that finds many microformat elements, including hCalendar events, and [http://blog.davidjanes.com/mtarchives/2005_08.html#003379 provides a popup menu of actions]. The hCalendar to vCalendar conversion is done internally within the script. ''This will work with FireFox 1.5+/GreaseMonkey 0.6.4+ now.''

==== Aggregators ====
* [http://placenamehere.com/mf/nnwextract/ Extract Microformats] is a script for NetNewsWire that supports extracting hCard and hCalendar data in blog posts (via technorati service). Written by [[User:ChrisCasciano|Chris Casciano]]
* [http://kula.jp/software/endo/screenshots/ Endo], an OS X aggregator, supports discovering hCal and adding those events to iCal. Look at the last screenshot at the bottom of the page.

=== Browsing ===
Implementations that detect, display and otherwise highlight hCalendar events in pages.

* In [http://www.xfytec.com/community/ xfy Community], there are some hCalendar implementations. "hCalendar via RSS" parses an RSS feed, retrieves XHTML documents linked from that feed, and syndicates hCalendars into a calendar view.
* [http://web.mit.edu/glasser/www/JSCalendar/ JSCalendar] parses hCalendar and produces a displayable HTML table/CSS-based calendar.

==== Firefox extension ====
*[http://blog.codeeg.com/tails-firefox-extension/ Tails is a Firefox Extension] that will display the presence of microformats ([[hcard|hCard]], [[hcalendar|hCalendar]], [[hreview|hReview]], [[xfolk|xFolk]]) on a webpage.

=====Pending=====
*[http://reminderfox.mozdev.org/ ReminderFox] have hCalendar import on their "to do " list.

==== Flock extension ====
*[http://blog.codeeg.com/2006/03/20/flock-tails-flocktails/ Flocktails] - port of Tails extension for Flock 0.5.12 that looks for hCards, hCalendar, xFolk and hReview and tosses them into a handy topbar

=== Libraries ===
Open source libraries of hCalendar parsers and other related code for building hCalendar implementations.
; Javascript : [http://virtuelvis.com/archives/2005/11/learn-to-love-microformats simple hCalendar parser] by [http://virtuelvis.com/ Arve Bersvendsen]
; PHP :
*[http://randomchaos.com/microformats/base/ Microformat Base] is an open-source PHP microformat aggregation crawler, currently recognizing hreview, hcalendar, and hcard.
* [http://fresh.t-systems-sfr.com/unix/src/www/WebCalendar-devel-1.1.1.tar.gz:a/WebCalendar-1.1.1/includes/classes/hKit/hcal.profile.php hCalendar profile] for the [http://allinthehead.com/hkit/ hKit] parser.
; Ruby : [http://opensource.reevoo.com/2006/03/08/release-uformats-12/ uformats] is a ruby library that can parse [[hCalendar]], [[hCard]], [[hReview]] and [[rel-tag]]
; XSLT :
* X2V is available as an XSLT library
* [http://dev.w3.org/cvsweb/2001/palmagent/ palmagent] by [[User:DanC]] includes toICal.xsl and test materials; it works much like xhtml2vcal.xsl in X2V. See also: [http://www.w3.org/2002/12/cal/ RDF Calendar workspace] with icalendar test materials.

=== Potential implementations ===

These are open source projects that could be potentially enhanced to support hCalendar.

* [http://www.k5n.us/webcalendar.php?topic=About WebCalendar]
* [http://phpicalendar.net/documentation/index.php?title=Main_Page PHP iCalendar]
* [http://www.vcalendar.org VCalendar]
* Investigation: [http://wiki.mozilla.org/Calendar_Talk:Lightning#hCalendar_publish_and_subscribe_support Mozilla Calendar / Lightning / Sunbird hCalendar support discussion]

== References ==
=== Normative References ===
* [http://www.w3.org/TR/2002/REC-xhtml1-20020801/ XHTML 1.0 SE]
* [[hcard|hCard]]
* [http://www.ietf.org/rfc/rfc2445.txt iCalendar RFC2445]

=== Informative References ===
* [http://w3.org/TR/REC-CSS1 CSS1]
* [http://tantek.com/log/2004/09.html#hcalendar hCalendar term introduced and defined on the Web, 20040930]
* [http://wiki.oreillynet.com/foocamp04/index.cgi?HTMLForCalendars FOO Camp 2004 HTML For Calendars presentation, 20040911]
* [http://wiki.oreillynet.com/foocamp04/index.cgi?SimpleSemanticFormats FOO Camp 2004 Simple Semantic Formats presentation, 20040910]
* [http://www.ietf.org/internet-drafts/draft-royer-ical-basic-04.txt iCal-Basic draft 04]
* Contributed from http://developers.technorati.com/wiki/hCalendar
* [http://www.w3.org/TR/xhtml11 XHTML 1.1]

==== Specifications That Use hCalendar ====
* [[hreview|hReview]]

==== Similar Work ====
* [http://lists.osafoundation.org/pipermail/ietf-calsify/ IETF-calsify archives]
* [http://www.softwarestudio.org/iCal/2445Issues.html RFC2445 Issues List]
* [http://ietf.webdav.org/calsify/ CALSIFY WG Links And Resources]

== Related Pages ==
* [http://microformats.org/code/hcalendar/creator hCalendar creator] ([[hcalendar-creator-feedback|feedback]]) - create your own hCalendar events.
* [[hcalendar-authoring|hCalendar authoring]] - learn how to add hCalendar markup to your existing events.
* [[hcalendar-intro]] ''draft'' '''plain English''' introduction (for use in Evangelism)
* [[hcalendar-faq|hCalendar FAQ]] - If you have any questions about hCalendar, check here, and if you don't find answers, add your questions!
* [[hcalendar-parsing|hCalendar parsing]] - Normatively details of how to parse hCalendar.
* [[hcalendar-issues|hCalendar issues]] - Please add any issues with the specification to the issues page.
* [[hcalendar-profile|hCalendar profile]] - The XMDP profile for hCalendar

This specification is a work in progress. As additional aspects are discussed, understood, and written, they will be added. These thoughts, issues, and questions are kept in separate pages.

* [[hcalendar-brainstorming|hCalendar Brainstorming]] - where we are keeping our brainstorms and other explorations relating to hCard
* [[hcalendar-tests|hCalendar tests]] - a wiki page with actual embedded hCalendar events to try parsing.
* [[icalendar-implementations|iCalendar implementations]]

== Further Reading ==
* [http://www.livejournal.com/users/jwz/444651.html jwz - Hula] (required reading)
* [http://www.jwz.org/doc/groupware.html Groupware Bad by Jamie Zawinski] crystalizes the reason for hCalendar ('''emphasis''' added):
<blockquote>Right now people can do that by publishing .ics files, but it's not trivial to do so, and it's work on the part of other people to look at them. '''If it's not HTML hanging off our friend's home page that can be viewed in any browser on a public terminal in a library, the bar to entry is too high and it's useless.'''</blockquote>

* [http://muddybranch.thejkgroup.com/ Jason Klemow's blog]
* [http://weblog.infoworld.com/udell/2006/01/11.html#a1368 Moving forward with microformats] by [http://weblog.infoworld.com/udell Jon Udell] provides an hCalendar example and some discussion.
* See also [http://www.technorati.com/cosmos/referer.html blogs discussing this page] and the [http://technorati.com/tags/hcalendar hCalendar tag]
* [http://en.wikipedia.org/wiki/HCalendar Wikipedia article on hCalendar] (requires expansion)

hcalendar

2006-11-22T05:38:46Z

MJ: /* Examples in the wild */

<h1> hCalendar </h1>

hCalendar is a simple, open, distributed calendaring and events format, based on the iCalendar standard ([http://www.ietf.org/rfc/rfc2445.txt RFC2445]), suitable for embedding in (X)HTML, Atom, RSS, and arbitrary XML. hCalendar is one of several open [[microformats|microformat]] standards.

Want to get started with writing an [[hcalendar|hCalendar]] event? Use the [http://microformats.org/code/hcalendar/creator hCalendar creator] to write up an event and publish it, or follow the [[hcalendar-authoring|hCalendar authoring tips]] to add hCalendar markup to your page of upcoming events or events you mention in blog posts, wikis, etc.

__TOC__

== Specification ==

; Editor : [http://tantek.com/ Tantek Çelik] ([http://technorati.com Technorati, Inc])
; Authors : [http://tantek.com/ Tantek Çelik], [http://technorati.com Technorati, Inc]
: [http://suda.co.uk/ Brian Suda]

=== Copyright ===
{{MicroFormatCopyrightStatement2004}}

=== Patents ===
{{MicroFormatPatentStatement}}

=== Inspiration and Acknowledgments ===
Thanks to:
* Adam Bosworth for leading the [http://wiki.oreillynet.com/foocamp04/index.cgi?HTMLForCalendars FOO Camp 2004 HTML For Calendars presentation] which brought together a critical mass of interested parties.

== Introduction ==
The iCalendar standard ([http://www.ietf.org/rfc/rfc2445.txt RFC2445]), has been broadly interoperably implemented (e.g. Apple's "iCal" application built into MacOSX).

In addition, bloggers often discuss events on their blogs -- upcoming events, writeups of past events, etc. With just a tad bit of structure, bloggers can discuss events in their blog(s) in such a way that spiders and other aggregators can retrieve such events, automatically convert them to iCalendar, and use them in any iCalendar application or service.

This specification introduces the '''hCalendar''' format, which is a 1:1 representation of the aforementioned iCalendar standard, in semantic XHTML. Bloggers can both embed hCalendar events directly in their web pages, and style them with CSS to make them appear as desired. In addition, hCalendar enables applications to retrieve information about such events directly from web pages without having to reference a separate file.

== Semantic XHTML Design Principles ==

{{semantic-xhtml-design-principles}}

== Format ==

=== In General ===

The iCalendar standard ([http://www.ietf.org/rfc/rfc2445.txt RFC2445]) forms the basis of hCalendar.

Note: the editor and authors of this specification are tracking the [http://lists.osafoundation.org/pipermail/ietf-calsify/ "iCal-Basic" effort] and intend to base the core hCalendar profile on iCal-Basic. See references for a link to the current draft.

The basic format of hCalendar is to use iCalendar object/property names in lower-case for class names, and to map the nesting of iCalendar objects directly into nested XHTML.

=== More Semantic Equivalents ===

However, for some properties there is a more semantic equivalent, and therefore they get special treatment, e.g.:
* <code>URL</code> in iCalendar becomes <code><a class="url" href="...">...</a></code> inside the element with <code>class="vevent"</code> in hCalendar.
* <code>ATTENDEE</code>, <code>CONTACT</code>, and <code>ORGANIZER</code> in iCalendar may be represented by an [[hcard|hCard]] in hCalendar .
* A named <code>LOCATION</code> (potentially with an address and/or geo) in iCalendar may be represented by a nested [[hcard|hCard]] in hCalendar. Similarly, an address <code>LOCATION</code> may be represented by an [[adr]], and a geo (latitude and longitude) <code>LOCATION</code> may be represented by a [[geo]].
* <code>UID</code> in iCalendar simply becomes another semantic applied to a specific URL for an hCalendar event.

=== Singular vs. Plural Properties ===

For properties which are singular (e.g. "N" and "FN" from vCard), the first descendant element with that class should take effect, any others being ignored.

For properties which can be plural (e.g. "TEL" from vCard), each class instance should create a instance of that property. Plural properties with subtypes (e.g. TEL with WORK, HOME, CELL from vCard) can be optimized to share a common element for the property itself, with each instance of subtype being an appropriately classed descendant of the property element.

==== Plural Properties Singularized ====

Since plural property names become their singular equivalents, even if the original plural property permitted only a single value with multiple components, those multiple components are represented each with their own singularly named property and the the property is effectively multivalued and subject to the above treatment of multivalued properties.

=== Human vs. Machine readable ===
If an <code><nowiki><abbr></nowiki></code> element is used for a property, then the '<code>title</code>' attribute of the <code><nowiki><abbr></nowiki></code> element is the value of the property, instead of the contents of the element, which instead provide a human presentable version of the value. This specification recommends that such <code><nowiki><abbr></nowiki></code> elements be used for the following iCalendar properties:
* DTSTART, DTEND, DURATION, RDATE, RRULE

== Example ==

Here is a sample event in an iCalendar:
<pre><nowiki>
BEGIN:VCALENDAR
PRODID:-//XYZproduct//EN
VERSION:2.0
BEGIN:VEVENT
URL:http://www.web2con.com/
DTSTART:20051005
DTEND:20051008
SUMMARY:Web 2.0 Conference
LOCATION:Argent Hotel\, San Francisco\, CA
END:VEVENT
END:VCALENDAR
</nowiki></pre>
and an equivalent event in hCalendar format with various elements optimized appropriately. See [[hcalendar-example1-steps]] for the derivation.

<pre><nowiki>
<span class="vevent">
<a class="url" href="http://www.web2con.com/">
<span class="summary">Web 2.0 Conference</span>:
<abbr class="dtstart" title="2005-10-05">October 5</abbr>-
<abbr class="dtend" title="2005-10-08">7</abbr>,
at the <span class="location">Argent Hotel, San Francisco, CA</span>
</a>
</span>
</nowiki></pre>
which could be displayed as:

[http://www.web2con.com/ Web 2.0 Conference: October 5-7, at the Argent Hotel, San Francisco, CA]

The following example specifies a scheduled meeting that begins
at 8:30 AM EST on March 12, 1998 and ends at 9:30 AM EST on March 12,
1998.

<pre><nowiki>
BEGIN:VCALENDAR
BEGIN:VEVENT
UID:guid-1.host1.com
DTSTAMP:19980309T231000Z
DESCRIPTION:Project XYZ Review Meeting
SUMMARY:XYZ Project Review
DTSTART:19980312T133000Z
DTEND:19980312T143000Z
LOCATION:1CP Conference Room 4350
END:VEVENT
END:VCALENDAR
</nowiki></pre>

The equivalent in hCalendar:

<pre><nowiki>
<div class="vevent">
<h3 class="summary">XYZ Project Review</h3>
<p class="description">Project XYZ Review Meeting</p>
<p>To held on <abbr class="dtstart" title="1998-03-12T08:30:00-05:00">12 March 1998 from 8:30am EST</abbr>
until <abbr class="dtend" title="1998-03-12T09:30:00-05:00">9:30am EST</abbr></p>
<p>Location: <span class="location">1CP Conference Room 4350</span></p>
<small>Booked by: <span class="uid">guid-1.host1.com</span> on <abbr class="dtstamp" title="19980309T231000Z">9 Mar 1998 6:00pm</abbr></small>
</div>
</nowiki></pre>

This could be displayed as:

----

<div class="vevent">
<h3 class="summary">XYZ Project Review</h3>
<p class="description">Project XYZ Review Meeting</p>
<p>To held on <abbr class="dtstart" title="1998-03-12T08:30:00-05:00">12 March 1998 from 8:30am EST</abbr>
until <abbr class="dtend" title="1998-03-12T09:30:00-05:00">9:30am EST</abbr></p>
<p>Location: <span class="location">1CP Conference Room 4350</span></p>
<small>Booked by: <span class="uid">guid-1.host1.com</span> on
<abbr class="dtstamp" title="19980309T231000Z">9 Mar 1998 6:00pm</abbr></small></div>

----

Note 1: The product information is not necessary since hCalendar is an interchange format. When transforming hCalendar back into iCalendar, the transforming engine should add its own product ID.

Note 2: A surrounding <code><nowiki><span class="vcalendar"></nowiki></code> element is optional, and is left out as such. It is optional since the context of a vcalendar is implied when a vevent is encountered. The implied context/scope is that of the document. Authors may explicitly use elements with class="vcalendar" to wrap sets of vevents that all belong to the same calendar, e.g. when publishing multiple calendars on the same page.

Note 3: The version information is unnecessary in hCalendar markup directly since the version will be defined by the profile of hCalendar that is used/referred to in the 'profile' attribute of the <head> element.

Note 4: ISO8601 dates (required by iCalendar) are not very human friendly. In addition, the year is often understood implicitly by humans from the context. Thus <code><nowiki><abbr></nowiki></code> elements are used to simultaneously provide a human friendly date and/or time in the visible contents of the element, while placing the respective machine parsable comprehensive ISO8601 datetime in the 'title' attribute.
The notation <code>YYYY-MM-DDThh:mm:ss</code> should be used for better readability, following the format of RFC 3339.

Note 5: The difference between the DTEND ISO8601 date (2005-10-08) and the human readable date (7) is NOT a mistake. [http://lists.osafoundation.org/pipermail/ietf-calsify/2005-September/000769.html DTEND is exclusive], meaning, that the event ends just before the DTEND. Thus for events which start on one day and end on another day, the DTEND date must be specified as the day after the day that a human would say is the last day of the event.

Note 6: The location in this example contains implicit structure (venue name, city, state) which could be marked up explicitly as an [[hcard|hCard]]. See [http://microformats.org/wiki/hcalendar-brainstorming#hCard_locations hCalendar brainstorming: hCard locations] for a informative explanation of how to do this.

See [[hcalendar-examples]] for more hCalendar examples

== Examples in the wild ==
This section is '''informative'''.

The following sites have implemented hCalendar, and thus are a great place to start for anyone looking for examples "in the wild" to try parsing, indexing, organizing etc. If events on your pages are marked up with hCalendar, feel free to add it to the top of this list. Once the list grows too big, we'll make a separate wiki page.

=== New Examples ===
Please add new examples to this section.

* [http://finetoothcog.com/site/stolen_bikes] uses hCalendar to markup when bikes are stolen.
* [https://www.urbanbody.com/information/contact-us Urban Body Men's Clothing] uses hCalendar for business hours and hCard for business locations.
* [http://www.infoiasi.ro The website of the Faculty of Computer Science], "A. I. Cuza" University Iaşi, Romania, uses hCalendar to markup events.
* [http://www.crosbyheritage.co.uk/events/ Colin Crosby Heritage Tours] uses hCalendar to markup events.
* [http://www.facebook.com Facebook] use hCalendar to markup events.
* [http://www.newbury-college.ac.uk/ Newbury College UK] uses a smattering of hCalendar and hCard
* [http://07.pagesd.info/ardeche/agenda.aspx 07.pagesd.info] uses hCalendar and hCard to mark up events of the Ardèche département in France.
* [http://climbtothestars.org Stephanie Booth] announced the [http://climbtothestars.org/archives/2006/09/14/microformats-et-bloggy-friday-doctobre/ Bloggy Friday for October 2006] using hCalendar.
* The [http://www.westmidlandbirdclub.com/ West Midland Bird Club], in the English Midlands, uses hCal (with nested hCard) on its [http://www.westmidlandbirdclub.com/diary/ diary of birding events].
* [http://www.comtec-ars.com/press-releases/ ComTec audience response systems' press releases] use hCalendar as a method to organize by title and date.
* [http://webdirections.org/program/ The Web Directions Conference (Sydney Australia)] uses hCalendar for their program. It uses axis and headers for events in a table, and demonstrates how easy it is to make the whole thing downloadable using X2V.
* [http://www.thestreet.org.au/ The Street Theatre (Canberra, Australia)] now uses hCalendar for performances on its [http://www.thestreet.org.au/whats_on.htm What's On] page.
* [http://www.clacksweb.org.uk Clackmannanshire Council] uses hCalendar on its [http://www.clacksweb.org.uk/community/events/ event diary] listing pages and individual event pages.
* [http://www.markthisdate.com/ Calendarportal MarkThisDate.com] now uses hCalendar for all calendars. On our website visitors can add calendars and download calendars to Outlook, Lotus Notes, iCal, Netvibes, 30Boxes, Google Calendar and many others. Over 600 calendars were already uploaded.
* [http://mogue.jp/ mogue] uses hCalendar at [http://mogue.jp/event/1000/ event detail] pages.
* [http://www.gustavus.edu/events/nobelconference/2006/schedule.cfm 2006 Nobel Conference] uses hCalendar for the conference schedule
* [http://www.geekinthepark.co.uk Geek in the Park] uses hCalendar for the event information. -- by [[User:Trovster|trovster]]
* [http://www.besancon.fr/ official site of Besançon (France)] for its events
* [http://2006.dconstruct.org/schedule/ Conference schedule for d.Construct 2006] is published using hCalendar.
* [http://local.yahoo.com Yahoo Local] now supports hCalendar
* We used hcalendar for the [http://www.fuckparade.org/flyer/2006/ F’parade flyer 2006], a counter demonstration to the Love Parade in Berlin, alas the '''Firefox tails extension''' doesn't get a summary when it's an alt-text in an image.
* [http://www.harper-adams.ac.uk/press/events.cfm Harper Adams University College] uses hCalendar to mark up all University events on the Homepage and Events Calendar page.
* [http://www.capital.edu/ Capital University] uses hCalendar on multiple pages to provide feeds of events, relevant to page content
* [http://www.thesession.org/events/ The Session events] uses hCalendar to mark up concerts, festivals and workshops related to Irish traditional music.
* [http://rubyandrails.org/usergroups/newcastle ncl.rb] uses hCalendar to mark up new meetings.
* [http://www.worldcupkickoff.com/ World Cup KickOff] where you can download and keep all the fixtures you are interested in so you will never miss a single game of the 2006 football World Cup!
** This link was on the [http://www.lifehacker.com/software/sports/world-cup-start-times-for-ical-etc-175393.php Lifehackers site] and made its way to the yahoo news site:

Mon May 22, 4:00 PM ET
The World Cup, one of the world's most watched sporting events, is almost upon us. If you've ever tried to follow your favorite team through the Cup you know that it can sometimes be difficult to know when they're on. World Cup Kickoff can help.

World Cup KickOff is all you will ever need for knowing all the match details for the upcoming World Cup 2006. Whether you use your mobile phone, MS Outlook, Apple iCal or Mozilla Calendar, you can download and keep all the fixtures you are interested in so you will never miss a single game!
ADVERTISEMENT

Next tip? We'll show you how to get up at 2 AM to watch your matches. ;0) Thanks to Tom for the tip!

* [http://gross.org.za/calendar GROSSUG Calendar] - Uses hCalendar to mark up meetings and other events.
* [http://www.webanalyticsassociation.org/en/calendarevents/search.asp Web Analytics Association] - hCalendar microformat is in place on all Tendenci sites on the calendar events search page and consolidated list page.
* [http://www.tendenci.com/en/calendarevents/search.asp Tendenci Calendar Events] with hCalendar
* [http://www.argolon.com/2006/04/17/web20-conference-in-dublin/ Web2.0 Conference in Dublin] hCalendar event
* [http://www.meetup.com/ Meetup.com] has marked up [http://www.meetup.com/cities/us/ny/new_york city event calendars], [http://photo.meetup.com/100/events/ group event lists], and [http://www.meetup.com/ signed-in homepages] with hCalendar.
* [http://ukwindsurfing.com/ ukwindsurfing.com] has marked upcoming events with hCalendar, and the [http://ukwindsurfing.com/events/ events page] in a table.
* [http://ocono.com/ ocono.com] has marked up it's "Upcoming Events" list with hCalendar.
* [http://www.austinbloggers.org/ Austin Bloggers] has marked up their "Upcoming Events" box with hCalendar ([http://www.austinbloggers.org/blog/a/001123.html announcement]).
* Ning's cloneable Group app has [[hcalendar|hCalendar]] markup on its [http://group.ning.com/index.php?controller=event&action=list event calendar] and [http://group.ning.com/index.php?controller=event&action=view&id=727220 event detail] pages.
* [http://tantek.com/microformats/2006/03-01-TechPlenAgenda.html Agenda: W3C Technical Plenary Day, March 1 2006] has [[hcard|hCard]] and [[hcalendar|hCalendar]] markup. ([http://www.w3.org/2006/03/01-TechPlenAgenda.html original here]).
* The National Arbor Day Foundation has started using hCalendars for their [http://arborday.org/programs/conferences/communityforestry/index.cfm upcoming] [http://arborday.org/programs/conferences/hazardtrees-treeplanting/ conferences].
* [http://www.stateofflux.com/ State of Flux street art site] has started adding events in hCalendar format
* The [http://barcamp.org/#BarCamps BarCamp home page lists upcoming BarCamps marked up with hCalendar] and even has a "Subscribe..." link.
* [http://www.w3.org/2005/12/allgroupoverview.html 2006 W3C Technical Plenary Week] has marked up the schedule and events for the week with hCalendar.
* [http://www.code4lib.org/2006/schedule code4lib Conference 2006 Schedule] is marked up with hCalendar as [http://www.code4lib.org/node/65 announced on their blog].
* [http://grouper.ieee.org/groups/754 IEEE 754 Working Group] - trying hCalendar for upcoming meetings.
* [http://www.pehuen.org/node/494 Elecciones 2005 Chile] - the first spanish language hCalendar event found in the wild.
* [http://www.codewitch.org/it/2005/11/17/no-creative-commons-no-party/ Giocolando » No Creative Commons? No Party!] is marked up with hCalendar
* [http://www.cmprofessionals.org/events/calendar.html CM Pros Events Calendar] by Bob Doyle
* [http://www.midgard-project.org/community/events/ Midgard CMS Event calendar] - as [http://bergie.iki.fi/blog/new-event-calendar-for-midcom.html blogged by Henri Bergius]
* [http://www.iowamilitaryveteransband.com/schedule/ Iowa Military Veterans Band Schedule] - hCalendar markup [http://weblog.randomchaos.com/archive/2005/10/24/Microformats/ added by Scott Reynen]
* [http://www.funfairgames.net/weblog/posts/00000011.html Upcoming events on Jason A.R. Moody Amusements Weblog] posted by Jason Moody on 15 Oct 2005. [http://www.funfairgames.net/weblog/index.html His weblog] in general has hCalendar events posted inside the blog posts.
* [http://tantek.com/microformats/2005/syndicate/tracks-sessions-schedule.html Syndicate - Tracks & Sessions]
* [http://tantek.com/microformats/2005/web2/program.html Web 2.0 Conference schedule page marked up with hCalendar]
* [http://www.thisiscmon.com/ C'MON] is a rock band from Canada, and their [http://www.thisiscmon.com/shows/ tour dates] have been marked up by [http://www.d2digitalmedia.com/ Ray Dickman] with hCalendar.
* [http://ifreebusy.com/ ifreebusy.com] will display freebusy information using hCalendar. See this [http://ifreebusy.com/neiljensen/freebusy/ example].
* [http://we05.com/ Web Essentials 05] has marked up their [http://we05.com/program.cfm program schedule table with hCalendar], using the 'axis' and 'headers' attributes.
* [http://www.asdvbonaparte.nl/ ASDV Bonaparte] is a Dutch debating society. Their events calendar has been marked up with the hCalendar conventions.
* [http://chocnvodka.blogware.com/blog Suw Charman] has marked up [http://suw.org.uk/archives/category/events/ her events] with hCalendar.
* [http://www.blogbusinesssummit.com/ Blog Business Summit] has published their [http://www.blogbusinesssummit.com/details.htm event details] marked up with hCalendar.
* [http://eventful.com Eventful.com] publishes all events with hCalendar and venues with [[hcard|hCard]]. Took them only 15 minutes to implement both! Their Atom feeds also contain hCalendar/hCard.
* [http://upcoming.org Upcoming.org] publishes all events and lists of events with hCalendar. Took them only an hour to add hCalendar support to the site.
* The [http://laughingsquid.com/squidlist/calendar/ Laughing Squid Calendar] events, [http://laughingsquid.com/squidlist/calendar/9949/2005/5/9 e.g. this party], now supports hCalendar.
* [http://paulschreiber.com/ Paul] Schreiber's [http://concerts.shrub.ca/ Sunnyvale House Concerts] site publishes hCalendar event information for upcoming concerts. In addition the [http://concerts.shrub.ca/shows Past Shows] page contains hCalendar events for all past concerts.
* [http://www.complexspiral.com/ Complex Spiral Consulting], both in the "Events" box on left side, and the separate [http://www.complexspiral.com/events/ Events page].
* [http://tantek.com/log Tantek's Thoughts], specifically the "Events" roll in the right-most column.
* [http://suda.co.uk/projects/holidays/ Lesser Known Holidays], a list of holidays on [http://suda.co.uk suda.co.uk] that can be imported via iCal and hCal so you can compare actual transformation versus intended.
* [http://norman.walsh.name/2005/itinerary/ Norm Walsh's travel schedule] use hCalendar as well as GRDDL.
* [http://www.policyawareweb.org/2005/ftf2/paw-mtg Policy Aware Web (PAW) Project Meeting] uses hCalendar to record date-related decisions, and uses a vtodo microformat to record action items.
* The [http://lufgi4.informatik.rwth-aachen.de Laboratory for Dependable Distributed Systems] publishes it's [http://lufgi4.informatik.rwth-aachen.de/cfps list of notable CfPs on dependability and security] with hCalendar-todo elements.
* The [http://laughingsquid.com/laughing-squid-10th-anniversary-party/ Laughing Squid 10th Anniversary Party] has an hcalendar page.
* SPRACI has hcalendar versions of its nightlife/clubbing/gigs/festivals listings for many cities worldwide - eg: [http://www.spraci.com/listhcalendar.php?parea=sydney&category=all Events in Sydney] (check the [http://www.spraci.com/api/ API] pages in the faq section of [http://www.spraci.com/ SPRACI] for more info about the area/city keywords and category tags to use to get data for your city/categories
* WWF-Australia events calendars: [http://wwf.org.au/act/events/ What's on], [http://wwf.org.au/act/volunteer/ Volunteer]
* [http://rubyholic.com rubyholic] uses hCalendar to publish calendars for ruby groups.
* [http://www.bath.ac.uk/whats-on/ University of Bath What's On] uses hCalendar on individual event pages
* The [http://www.kiez-ev.de/ Kiez] is a small cinema and has published its [http://www.kiez-ev.de/programm program] marked up with hCalendar

=== Examples with some problems ===
* [http://www.theatrestudies.llc.ed.ac.uk/ Theatre Studies: European Theatre] at the University of Edinburgh uses hCalendar to markup news and events on the index page.
**Uses "display:none" on image. [[User:AndyMabbett|Andy Mabbett]] 15:32, 13 Nov 2006 (PST)
* [http://www.bokle.de/ s'Bokle] is a German music pub. Their events calendar has been marked up with hCalendar.
** improper use of rrule --[[User:RyanKing|RyanKing]] 16:04, 6 Jan 2006 (PST)
* [http://plan9.tryphon.org/nancy/list Plan9] - Uses hCalendar to mark up events !
** dtstart/dtend are implemented on span element [[User:TomArmitage|Tom Armitage]] June 23, 2006
* [http://www.socaltech.com socalTECH] is a news and information site. Their front page event listing is marked up with hCalendar.
** dtstart/dtend implemented on span element [[User:TomArmitage|Tom Armitage]] June 23, 2006
* [http://www.multipack.co.uk The Multipack] features a vevent for the next meeting information.
** dtstart/dtend are implemented on em element [[User:TomArmitage|Tom Armitage]] June 23, 2006
* [http://paulschreiber.com/ Paul] Schreiber's [http://iceoasis.shrub.ca/ unofficial schedule site] publishes hCalendar information for upcoming hockey games at [http://www.iceoasis.com/ Ice Oasis]
** dtstart/dtend are implemented on td element [[User:TomArmitage|Tom Armitage]] June 23, 2006

- whilst Tails parses dtstart/dtend on <em>any</em> element, technically it really needs to be on abbr. Technorati Microformats Search only looks for the title element on <code><nowiki><abbr></nowiki></code> tags, for instance.

== Implementations ==
This section is '''informative'''.

The following implementations have been developed which either generate or parse hCalendars. If you have an hCalendar implementation, feel free to add it to the top of this list. Once the list grows too big, we'll make a separate wiki page.

=== Authoring ===
Implementations you can use to author, create, and publish hCalendar events.

==== Blogging and CMS tools ====
;Midgard CMS : [http://www.midgard-project.org/documentation/net-nemein-calendar/ Midgard CMS - net.nemein.calendar] - as [http://bergie.iki.fi/blog/new-event-calendar-for-midcom.html blogged by Henri Bergius]

;Drupal module : [http://hybernaut.com/upcoming-hcal Drupal Upcoming.org syndication module emits hCalendar]
;MovableType and WordPress plug-ins : [http://structuredblogging.org/formats.php StructuredBlogging] is a set of plugins [http://structuredblogging.org/structuredblogging-wp-latest.zip for WordPress] and [http://structuredblogging.org/structuredblogging-wp-latest.zip for MovableType] that supports embedding hCalendar and other microformats in templates and blog posts.
;Textpattern plug-in : [http://placenamehere.com/TXP/pnh_mf/ pnh_mf] is a plugin for [http://textpattern.com/ Textpattern] that supports embedding hCalendar and other microformats in templates and blog posts. Written by [http://placenamehere.com/ Chris Casciano].

==== Browser scripts and plug-ins ====
Browser plugins that work with existing authoring tools:
; Any browser with javascript and a little bit of CSS : [http://microformats.org/code/hcalendar/creator microformats.org hCalendar creator] (see also original: [http://theryanking.com/ Ryan King] has an [http://theryanking.com/microformats/hcalendar-creator.html hCalendar creator]).
; Firefox Greasemonkey user script hCalendar creator : [http://www.decafbad.com/blog/2005/06/08/greasemonkey_magic magic_hcalendar Greasemonkey user script by Les Orchard] - allows easy form entry of an event into any textarea, e.g. into a blog post text area.
; Firefox Greasemonkey user script hCalendar to Google Calendar: [http://torrez.us Elias Torres] has created a [http://torrez.us/archives/2006/04/13/431/ simple script] that will parse hCalendar entries and create a link to add event to [http://www.google.com/calendar/ Google Calendar's] service. Based on [http://virtuelvis.com/archives/2005/11/learn-to-love-microformats George's] and [http://virtuelvis.com/archives/2005/11/learn-to-love-microformats Arve's] work.

==== Desktop Authoring Tools ====
;Dreamweaver Extension : [http://www.webstandards.org/action/dwtf/microformats/ Extension suite] for Dreamweaver 8 from the [http://webstandards.org/ Web Standards Project].
;xfy :
In [https://www.xfytec.com/community/ xfy Community], there are some hCalendar implementations.

* [https://www.xfytec.com/community/modules/mydownloads/singlefile.php?cid=15&lid=25 hCalendar via RSS] parses an RSS feed, retrieves XHTML documents linked from that feed, and syndicates hCalendars into a calendar view.
* [https://www.xfytec.com/community/modules/mydownloads/singlefile.php?cid=19&lid=23 hCalendar Marker XVCD] helps to mark up an event information in XHTML document with hCalendar.
* [https://www.xfytec.com/community/modules/mydownloads/singlefile.php?cid=15&lid=17 Simple RDF Calendar XVCD] is a schedule tool which uses RDF Calendar format. It also converts RDF Calendar format to iCalendar and hCalendar format.

=== Search and Discovery ===

* [http://kitchen.technorati.com/search Technorati Microformats Search] indexes [[hcard|hCard]], [[hcalendar|hCalendar]], and [[hreview|hReview]] as [http://tantek.com/log/2006/05.html#d31t1802 announced by Tantek].
* [http://leftlogic.com/info/articles/microformats_bookmarklet Microformats Bookmarklet] is a bookmarklet designed for Safari (works in Firefox and Camino) that overlays on the current page to allow users to import individual [[hcard|hCards]] or [[hcalendar|hCalendars]]. Written by [http://leftlogic.com Remy Sharp].

=== Conversion and Import ===
Implementations you can use to importing into a Calendar Application, typically by converting hCalendar to iCalendar/vCalendar.

==== Web Services ====
These return iCalendar (.ics) and other calendar formats for easy importing into typical calendar programs or other processing.
* [http://feeds.technorati.com/events Technorati Events Feed service] uses X2V library to parse hCalendar and return iCalendar (.ics). Note friendly URL, e.g. http://feeds.technorati.com/events/http%3A//microformats.org
* [http://suda.co.uk/projects/X2V/ X2V] parses hCalendar and produces a .ics (iCalendar) stream. Note: needs to be updated to track changes in the specification as they occur.
* [http://lifelint.net/ Life Lint Parser] parses hCalendar and produces .ics, .rdf and debugging information and attempts to be more fully compliant to the iCal standard than previous implementations. It can be used in the same manner as X2V. Can output iCal (w optional Outlook 2002 compat), and RDF.
* [http://spanningsalesforce.com/ Spanning Salesforce] produces hCalendar-enabled RSS feeds and .ics calendars from Salesforce.com.
* [http://makedatamakesense.com/myspace/event/ MySpace Events RSS Creator] creates RSS feeds of MySpace events with hCalendar markup.

==== Firefox Greasemonkey Plugins ====
* [http://george.hotelling.net/90percent/ George] has built a [http://george.hotelling.net/90percent/geekery/greasemonkey_and_microformats.php Greasemonkey user script that detects hCalendar events and allows users to easily add them to their calendar application(s)].
* [http://inside.glnetworks.de/ Martin Rehfeld] has updated the work of [http://blogmatrix.blogmatrix.com/ David Janes] and produced a [[Greasemonkey]] [http://inside.glnetworks.de/2006/06/05/microformats-have-arrived-in-firefox-15-greasemonkey-06/ script] that finds many microformat elements, including hCalendar events, and [http://blog.davidjanes.com/mtarchives/2005_08.html#003379 provides a popup menu of actions]. The hCalendar to vCalendar conversion is done internally within the script. ''This will work with FireFox 1.5+/GreaseMonkey 0.6.4+ now.''

==== Aggregators ====
* [http://placenamehere.com/mf/nnwextract/ Extract Microformats] is a script for NetNewsWire that supports extracting hCard and hCalendar data in blog posts (via technorati service). Written by [[User:ChrisCasciano|Chris Casciano]]
* [http://kula.jp/software/endo/screenshots/ Endo], an OS X aggregator, supports discovering hCal and adding those events to iCal. Look at the last screenshot at the bottom of the page.

=== Browsing ===
Implementations that detect, display and otherwise highlight hCalendar events in pages.

* In [http://www.xfytec.com/community/ xfy Community], there are some hCalendar implementations. "hCalendar via RSS" parses an RSS feed, retrieves XHTML documents linked from that feed, and syndicates hCalendars into a calendar view.
* [http://web.mit.edu/glasser/www/JSCalendar/ JSCalendar] parses hCalendar and produces a displayable HTML table/CSS-based calendar.

==== Firefox extension ====
*[http://blog.codeeg.com/tails-firefox-extension/ Tails is a Firefox Extension] that will display the presence of microformats ([[hcard|hCard]], [[hcalendar|hCalendar]], [[hreview|hReview]], [[xfolk|xFolk]]) on a webpage.

=====Pending=====
*[http://reminderfox.mozdev.org/ ReminderFox] have hCalendar import on their "to do " list.

==== Flock extension ====
*[http://blog.codeeg.com/2006/03/20/flock-tails-flocktails/ Flocktails] - port of Tails extension for Flock 0.5.12 that looks for hCards, hCalendar, xFolk and hReview and tosses them into a handy topbar

=== Libraries ===
Open source libraries of hCalendar parsers and other related code for building hCalendar implementations.
; Javascript : [http://virtuelvis.com/archives/2005/11/learn-to-love-microformats simple hCalendar parser] by [http://virtuelvis.com/ Arve Bersvendsen]
; PHP :
*[http://randomchaos.com/microformats/base/ Microformat Base] is an open-source PHP microformat aggregation crawler, currently recognizing hreview, hcalendar, and hcard.
* [http://fresh.t-systems-sfr.com/unix/src/www/WebCalendar-devel-1.1.1.tar.gz:a/WebCalendar-1.1.1/includes/classes/hKit/hcal.profile.php hCalendar profile] for the [http://allinthehead.com/hkit/ hKit] parser.
; Ruby : [http://opensource.reevoo.com/2006/03/08/release-uformats-12/ uformats] is a ruby library that can parse [[hCalendar]], [[hCard]], [[hReview]] and [[rel-tag]]
; XSLT :
* X2V is available as an XSLT library
* [http://dev.w3.org/cvsweb/2001/palmagent/ palmagent] by [[User:DanC]] includes toICal.xsl and test materials; it works much like xhtml2vcal.xsl in X2V. See also: [http://www.w3.org/2002/12/cal/ RDF Calendar workspace] with icalendar test materials.

=== Potential implementations ===

These are open source projects that could be potentially enhanced to support hCalendar.

* [http://www.k5n.us/webcalendar.php?topic=About WebCalendar]
* [http://phpicalendar.net/documentation/index.php?title=Main_Page PHP iCalendar]
* [http://www.vcalendar.org VCalendar]
* Investigation: [http://wiki.mozilla.org/Calendar_Talk:Lightning#hCalendar_publish_and_subscribe_support Mozilla Calendar / Lightning / Sunbird hCalendar support discussion]

== References ==
=== Normative References ===
* [http://www.w3.org/TR/2002/REC-xhtml1-20020801/ XHTML 1.0 SE]
* [[hcard|hCard]]
* [http://www.ietf.org/rfc/rfc2445.txt iCalendar RFC2445]

=== Informative References ===
* [http://w3.org/TR/REC-CSS1 CSS1]
* [http://tantek.com/log/2004/09.html#hcalendar hCalendar term introduced and defined on the Web, 20040930]
* [http://wiki.oreillynet.com/foocamp04/index.cgi?HTMLForCalendars FOO Camp 2004 HTML For Calendars presentation, 20040911]
* [http://wiki.oreillynet.com/foocamp04/index.cgi?SimpleSemanticFormats FOO Camp 2004 Simple Semantic Formats presentation, 20040910]
* [http://www.ietf.org/internet-drafts/draft-royer-ical-basic-04.txt iCal-Basic draft 04]
* Contributed from http://developers.technorati.com/wiki/hCalendar
* [http://www.w3.org/TR/xhtml11 XHTML 1.1]

==== Specifications That Use hCalendar ====
* [[hreview|hReview]]

==== Similar Work ====
* [http://lists.osafoundation.org/pipermail/ietf-calsify/ IETF-calsify archives]
* [http://www.softwarestudio.org/iCal/2445Issues.html RFC2445 Issues List]
* [http://ietf.webdav.org/calsify/ CALSIFY WG Links And Resources]

== Related Pages ==
* [http://microformats.org/code/hcalendar/creator hCalendar creator] ([[hcalendar-creator-feedback|feedback]]) - create your own hCalendar events.
* [[hcalendar-authoring|hCalendar authoring]] - learn how to add hCalendar markup to your existing events.
* [[hcalendar-intro]] ''draft'' '''plain English''' introduction (for use in Evangelism)
* [[hcalendar-faq|hCalendar FAQ]] - If you have any questions about hCalendar, check here, and if you don't find answers, add your questions!
* [[hcalendar-parsing|hCalendar parsing]] - Normatively details of how to parse hCalendar.
* [[hcalendar-issues|hCalendar issues]] - Please add any issues with the specification to the issues page.
* [[hcalendar-profile|hCalendar profile]] - The XMDP profile for hCalendar

This specification is a work in progress. As additional aspects are discussed, understood, and written, they will be added. These thoughts, issues, and questions are kept in separate pages.

* [[hcalendar-brainstorming|hCalendar Brainstorming]] - where we are keeping our brainstorms and other explorations relating to hCard
* [[hcalendar-tests|hCalendar tests]] - a wiki page with actual embedded hCalendar events to try parsing.
* [[icalendar-implementations|iCalendar implementations]]

== Further Reading ==
* [http://www.livejournal.com/users/jwz/444651.html jwz - Hula] (required reading)
* [http://www.jwz.org/doc/groupware.html Groupware Bad by Jamie Zawinski] crystalizes the reason for hCalendar ('''emphasis''' added):
<blockquote>Right now people can do that by publishing .ics files, but it's not trivial to do so, and it's work on the part of other people to look at them. '''If it's not HTML hanging off our friend's home page that can be viewed in any browser on a public terminal in a library, the bar to entry is too high and it's useless.'''</blockquote>

* [http://muddybranch.thejkgroup.com/ Jason Klemow's blog]
* [http://weblog.infoworld.com/udell/2006/01/11.html#a1368 Moving forward with microformats] by [http://weblog.infoworld.com/udell Jon Udell] provides an hCalendar example and some discussion.
* See also [http://www.technorati.com/cosmos/referer.html blogs discussing this page] and the [http://technorati.com/tags/hcalendar hCalendar tag]
* [http://en.wikipedia.org/wiki/HCalendar Wikipedia article on hCalendar] (requires expansion)