Microformats Wiki - User contributions [en]

Main Page

2011-08-30T08:09:31Z

RhysPrice:

<entry-title>Welcome to the microformats wiki!</entry-title>
__TOC__
Please start with the [[introduction]] page and read [[how-to-play]] before making any edits.

==Introduction==
This wiki is the central resource of the microformats community. You'll find current versions of published microformat specifications, specification drafts and publishing patterns. The wiki also hosts development resources, such as brainstorming pages for new formats and issue tracking pages for all current and in-development microformats.

== Get Started==
To get started with microformats:

* First, be familiar writing your pages and applications with semantically rich, descriptive, ‘[[posh|<abbr title="Plain Old Semantic HTML">POSH</abbr>]]’ <abbr title="HyperText Mark-up Language">HTML</abbr>.
* Learn about microformats from the [http://microformats.org/about/ about page], [http://microformats.org/ blog], [[press]], [[presentations]], [[books]], [[podcasts]], & [[screencasts]] pages.
* Take a look at established specifications such as [[hcard|hCard]] and [[hcalendar|hCalendar]], and follow the [[hcard-examples|examples]] to start publishing microformats.
* Have questions? Read the [[faq|frequently asked questions]] and see the [[glossary]] for terms and definitions. You can also post to the {{MicroformatsMailingList}}.
* Want to learn more in person? Check out microformats [[events]].

==Definition==
Microformats are small patterns of HTML to represent commonly published things like [[hcard|people]], [[hcalendar|events]], [[hatom|blog posts]], [[hreview|reviews]] and [[rel-tag|tags]] in web pages.

Microformats enable the publishing of higher fidelity information on the Web; the fastest and simplest way to provide feeds and APIs for the information in your website.

* Read more explanations of [[what-are-microformats|what microformats are]], and [[what-can-you-do-with-microformats|what you can do with them]].

== How to contribute ==
Do you want to help take microformats to the next level? You can:

* [[get-started|Get started]] by adding microformats to your website, services, and products.
* [[advocacy|Advocate]] the use of microformats on other web sites, especially those you use.
* Write a [[testimonial]].
* Do something on the [[to-do|to do list]].
* Join the [[irc|IRC Channel]] and [[mail|mailing lists]] to learn and help [http://mycaal.com/ loan modification] answer questions (read the [[mailing-lists#General_guidelines|general guidelines]] before posting).
* [[Main_Page#microformats_wiki_translations|Translate this microformats wiki into other languages]] to make microformats more accessible to readers of languages around the world.
* Before proposing any new microformats, make sure your website is [[POSH]], [[get-started|uses existing microformats]], and then read the [[process]].

This wiki has a number of enhancements to assist development and contributions to microformats. Before you start editing, see the [[wiki-2|wiki introduction page]] for instructions.

== Specifications ==
The list of current, stable [[microformats|Microformats]] open standard specifications.

* [[hcalendar|hCalendar]] - [http://microformats.org/code/hcalendar/creator hCalendar creator]
* [[hcard|hCard]] - [http://microformats.org/code/hcard/creator hCard creator]
* [[rel-license]]
* [[rel-nofollow]]
* [[rel-tag]]
* [[vote-links|VoteLinks]]
* [[XFN]] - [http://gmpg.org/xfn/creator XFN creator]
* [[XMDP]]
* [[xoxo|XOXO]]

''If you're tempted to try your hand at writing a microformat please read '''[[process|the process]]''' page first!''

== Drafts ==
Drafts are newer microformats, for which the specifications haven't been completed yet. Drafts are somewhat mature in the development [[process]] (see [[exploratory-discussions]] for additional efforts that are not as far along in the process). The stability of these documents cannot be guaranteed, and implementers should be prepared to keep abreast of future developments and changes. Please watch the wiki pages for updates.

* [[adr|adr]] - for marking up address information
* [[geo|geo]] - for marking up [http://en.wikipedia.org/wiki/WGS84 WGS84] geographic coordinates (latitude; longitude)
* [[hatom|hAtom]] - syndicating episodic content (e.g. weblog postings)
* [[haudio|hAudio]]
* [[hlisting|hListing]] - open, distributed listings
* [[hmedia|hMedia]] - A single media publishing format that relates to Images, Video and Audio.
* [[hnews|hNews]]
* [[hproduct|hProduct]]
* [[hrecipe|hRecipe]] - for cooking+baking recipes
* [[hresume|hResume]] - for publishing resumes and CVs
* [[hreview|hReview]] - [http://microformats.org/code/hreview/creator hReview creator]
* [[rel-directory]] - to indicate that the destination of a hyperlink is a directory listing containing an entry for the current page
* [[rel-enclosure]] - for indicating attachments (e.g. files) to download and cache
* [[rel-home]] - indicate a hyperlink to the homepage of the site
* [[rel-payment]] - indicate a payment mechanism
* [[robots-exclusion|robots exclusion]]

* [[xfolk|xFolk]]

== Design Patterns ==
{{design_patterns}} 

== Exploratory Discussions ==
See: [[exploratory-discussions]] for details of research and analysis of real-world [[examples]], existing formats, and brainstorming of possible new microformats, per the microformats [[process]].

== Examples ==
* [[examples-in-the-wild]]
* [[implementations]]
* [[zen-garden]]

== Resources ==
See [[resources]].

== User centric development ==
*[[user-interface]]
*[[data-portability]]
*[[social-network-portability]]

== Shared work areas ==
* [[to-do]]
* [[templates]]
* [http://microformats.org/wiki/delete pages for deletion] 
* [[Special:Specialpages|"Special" wiki pages]]
* [[year-in-review]]

== Tools, test cases, additional research ==
The first place to look for examples, code, and test cases is in the pages for each individual microformat. There are only a few cross-cutting [[tools|tools and services]] that need to process more than one microformat. That section is intended for editors, [[parsers]], [[validators]], test cases, and other information relevant across multiple microformats.

== Microformats wiki translations ==
You may read and edit microformats articles in many other languages:

* languages with over 100 articles
** [[Main_Page-fr|Français (French)]] {{UpdateMarker-fr}}
* languages with over 10 articles
** [[Main_Page-pt-br|Português (Brazilian Portuguese)]]
** [[Main_Page-ja|日本語 (Japanese)]]
** [[Main_Page-ru|Русский (Russian)]]
* languages with over 2 articles
** [[Main_Page-cs|Česky (Czech)]] {{NewMarker}}
** [[Main_Page-de|Deutsch (German)]]
** [[Main_Page-es|Español (Spanish)]]
** [[Main_Page-gl|Galego (Galician)]] {{NewMarker}}
** [[Main_Page-pl|Polski (Polish)]]
** [[Main_Page-ro|Română (Romanian)]] {{NewMarker}}
** [[Main_Page-zh|汉语 (Chinese)]]
** [[Main_Page-id|Indonesia (Bahasa Indonesia)]] {{NewMarker}}
* languages just started
** [[Main_Page-fa|پارسی (Farsi)]] {{NewMarker}}
** [[Main_Page-ar|العربية (Arabic)]]
** [[Main_Page-th|ภาษาไทย (Thai)]]
** [[Main_Page-it|Italiano (Italian)]] {{NewMarker}}
** [[Main_Page-ko|한국어 (Korean)]] {{NewMarker}}
* elsewhere
**[http://en.wikipedia.org/wiki/Microformat Wikipedia's article on microformats] has been translated into a number of languages.

See also [[other-languages]], and [[how-to-start-new-translation|how-to-start-a-new-translation]].

hcalendar

2011-08-30T07:07:39Z

RhysPrice: /* Informative References */

<entry-title>hCalendar 1.0</entry-title>
<dfn style="font-style:normal;font-weight:bold">hCalendar</dfn> is a simple, open, distributed calendaring and events format, using a 1:1 representation of standard iCalendar ([[rfc-2445|RFC2445]]) VEVENT properties and values in [[semantic-xhtml|semantic HTML or XHTML]]. hCalendar is one of several open [[microformats|microformat]] standards suitable for embedding in HTML, XHTML, Atom, RSS, and arbitrary XML.

'''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.

<div class="vcard">
; Editor
: [[User:Tantek|Tantek Çelik]] (http://tantek.com/, and before at [http://technorati.com Technorati, Inc.], and at [http://microsoft.com/ Microsoft Corporation])
</div>
; Authors: [http://tantek.com/ Tantek Çelik] (affiliations above)
: [[User:Brian|Brian Suda]] (http://suda.co.uk/)

; Acknowledgments: See [[hcalendar#Inspiration_and_Acknowledgments|acknowledgments]].

[[hcalendar#Copyright|copyright]] and [[hcalendar#Patents|patents]] statements apply.

== Example ==
Here is a simple event:
<blockquote>The microformats.org site was launched on 2005-06-20 at the Supernova Conference in San Francisco, CA, USA.</blockquote>

marked up with hCalendar
<source lang=html4strict>

The microformats.org site was launched
on 2005-06-20
at the Supernova Conference
in San Francisco, CA, USA.

</source>

== Status ==
hCalendar 1.0 is a microformats.org specification. Public discussion on hCalendar takes place on [[hcalendar-feedback]], the #microformats [[irc]] channel on irc.freenode.net, and [http://microformats.org/discuss/mail/microformats-discuss/ microformats-discuss mailing list].

=== Available languages ===
The English version of this specification is the only normative version. For translations of this document see the [[#translations]] section.

=== Errata and Updates ===
Known errors and issues in this specification are corrected in [[hcalendar-issues-resolved|resolved]] and [[hcalendar-issues-closed|closed]] issues. Please check there before reporting [[hcalendar-issues|issues]].

Note in particular the [[dtend-issue]] which affects end dates. Implementations {{should}} implement the issue resolution ASAP and [http://ufxtract.com/testsuite/hcalendar/hcalendar1.htm test it].

The hCalendar 1.0.1 update is currently under development and incorporates known errata corrections as well as the [[value-class-pattern]].

== 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 HTML. 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.

{{rfc-2119-intro}}

== Semantic XHTML Design Principles ==

{{semantic-xhtml-design-principles}}

For practical implementations, it should be noted that Internet Explorer's support for styling <code><nowiki><abbr></nowiki></code> elements is poor, and may require wrapper elements.

== 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 elements.

=== Root Class Name ===
The root class name for hCalendar is "vcalendar". An element with a class name of "vcalendar" is itself called an ''hCalendar''.

The root class name for events is "vevent". An element with a class name of "vevent" is itself called an ''hCalendar event''.

For authoring convenience, both "vevent" and "vcalendar" are treated as root class names for parsing purposes. If a document contains elements with class name "vevent" but not "vcalendar", the entire document has an implied "vcalendar" context.

'''vevent''' should be considered required for each event listing.

=== Properties and Sub-properties ===
The properties of an hCalendar are represented by elements inside the hCalendar. Elements with class names of the listed properties represent the values of those properties. Some properties have sub-properties, and those are represented by elements inside the elements for properties.

=== Property List ===
hCalendar properties (sub-properties in parentheses like this)

'''Required:'''
* '''dtstart''' ([[iso-8601|ISO date]])
* '''summary'''
Optional:
* location
* url
* dtend (ISO date), duration (ISO date duration)
* rdate, rrule
* category, description
* uid
* geo (latitude, longitude)
* attendee (partstat, role), contact, organizer
* attach
* status
* ... editor's note: this list is incomplete (an incomplete list is better than no list) and is being currently edited from RFC2445 to here. The above list of properties are those that are often used in hCalendar on the web.

=== Profile ===
The hCalendar XMDP profile is at http://microformats.org/profile/hcalendar

Content that uses hCalendar {{should}} reference this profile, e.g.
<source lang=html4strict>
<head profile="http://microformats.org/profile/hcalendar">
</source>
or
<source lang=html4strict>
<link rel="profile" href="http://microformats.org/profile/hcalendar">
</source>
or
<source lang=html4strict>
This content uses <a rel="profile" href="http://microformats.org/profile/hcalendar">hCalendar</a>.
</source>
Content may combine the above methods as well.

=== More Semantic Equivalents ===
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.
* <code>ATTACH</code> in iCalendar becomes an img or object element (where the value is stored ito / retrieved from the 'src' or 'data' attributes respectively). An <code><a class="attach" href="...">...</a></code> may also be used, in which case the 'href' attribute is used for the property value.

=== 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

== Examples ==

Here is a sample multiple-day event in an iCalendar:
<pre>
<nowiki>
BEGIN:VCALENDAR
PRODID:-//XYZproduct//EN
VERSION:2.0
BEGIN:VEVENT
URL:http://conferences.oreillynet.com/pub/w/40/program.html
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.

<source lang=html4strict>
<div class="vevent">
<a class="url" href="http://conferences.oreillynet.com/pub/w/40/program.html">
http://conferences.oreillynet.com/pub/w/40/program.html
</a>
Web 2.0 Conference:
<abbr class="dtstart" title="2005-10-05">October 5</abbr>-
<abbr class="dtend" title="2005-10-07">7</abbr>,
at the Argent Hotel, San Francisco, CA
</div>
</source>

which could be displayed as:

<div class="vevent">
http://conferences.oreillynet.com/pub/w/40/program.html 
Web 2.0 Conference:
<abbr class="dtstart" title="2005-10-05">October 5</abbr>-
<abbr class="dtend" title="2005-10-07">7</abbr>,
at the Argent Hotel, San Francisco, CA
</div>

Note 1: that this is a '''live''' hCalendar microformat, which will be found on this page by parsers.

Note 2: This example used to have "2005-10-08" as the value of the dtend, but per the resolution to the [[dtend-issue]], has been changed to "2005-10-07" in order to encourage publishers/implementers to update their markup/code immediately and [http://ufxtract.com/testsuite/hcalendar/hcalendar1.htm test it].

Note 3: Note that the iCalendar in the first part of the example has the code <code>DTEND:20051008</code>. That "8" is not a typo. iCalendar uses exclusive whole end dates (DTEND values) and thus requires that the DTEND value be set to a whole day after what content publishers visibly display as the ending date of an event. iCalendar's exclusive end dates convention has shown to be [[dtend-issue|problematic and confusing]] for content authors and publishers. Thus per the resolution to the [[dtend-issue]], in hCalendar, the end date is stated exactly as existing events publish visible end dates to humans, with an inclusive end date (dtend property value), in this example, 2005-10-07.

=== Meeting Example ===
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.

<source lang=html4strict>
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
</source>

The equivalent in hCalendar:

'''Note: This example needs to be updated to use the [[value-class-pattern]]. Use of full ISO8601 datetimes in abbr title attributes is deprecated in lieu of separate dates and times per the value-class-pattern.'''

<source lang=html4strict>
<div class="vevent">
<h3 class="summary">XYZ Project Review</h3>
Project XYZ Review Meeting
To be 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>
Location: 1CP Conference Room 4350
Booked by: guid-1.host1.com on
<abbr class="dtstamp" title="19980309T231000Z">9 Mar 1998 6:00pm</abbr>
</div>
</source>

This could be displayed as:

----

<div class="vevent">

<h3 class="summary">XYZ Project Review</h3>
Project XYZ Review Meeting
To be 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>
Location: 1CP Conference Room 4350
Booked by: guid-1.host1.com on <abbr class="dtstamp" title="19980309T231000Z">9 Mar 1998 6:00pm</abbr></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></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: [[iso-8601|ISO8601]] datetimes (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. '''Update: Per the [[value-class-pattern]], separate dates and times {{should}} be used by authors rather than a full ISO8601 datetime, for better readability and listenability.'''

Note 5: Per the [[dtend-issue]] resolution, DTEND dates are provided as humans expecte them to be (consistent with what day an event ends on), rather than iCalendar's confusing definition (the day after). Thus hCalendar processors which produce iCalendar must make the transformation, which is to treat a whole hCalendar <code>dtend</code> end date as *inclusive*, and convert it to an *[http://lists.osafoundation.org/pipermail/ietf-calsify/2005-September/000769.html exclusive DTEND]* end date when producing iCalendar.

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.

=== More Examples ===
See [[hcalendar-examples|hCalendar examples]] for more examples, including examples from iCalendar RFC 2445 converted into hCalendar.

== Examples in the wild ==
This section is '''informative'''. The number of hCalendar examples in the wild has expanded far beyond the capacity of being kept inline in this specification. They have been moved to a [[hcalendar-examples-in-wild|separate page]].

See [[hcalendar-examples-in-wild|hCalendar Examples in the wild]].

== Implementations ==
This section is '''informative'''. The number of hCalendar implementations has also expanded beyond the capacity of keeping them inline. They have been moved to a [[hcalendar-implementations|separate page]].

See [[hcalendar-implementations|hCalendar Implementations]].

== Articles ==
This section is informative. Articles and blog posts on hCalendar, most recent first. When it gets too big, we can move it to a page like [[hcalendar-articles]].

* 2009-08-19 (Updated: 2009-09-10) <cite class="entry-title">[http://dev.opera.com/articles/view/styling-and-extracting-hcalendar/ Styling and extracting hCalendar]</cite> by [http://dev.opera.com/author/1048426 Christopher Schmitt]
* 2008-11-17 [http://forabeautifulweb.com/blog/about/a_tribute_to_microformats_a_reader_question_answered/ A tribute to Microformats (a reader question answered)] by [http://www.stuffandnonsense.co.uk/ Andy Clarke]
* 2008-10-01 [http://www.ablognotlimited.com/articles/getting-semantic-with-microformats-part-4-hcalendar/ Getting Semantic With Microformats, Part 4: hCalendar] by [http://www.ablognotlimited.com/ Emily Lewis]
* 2008-02-01 [http://www.peachpit.com/guides/content.aspx?g=webdesign&seqNum=356 Microformats: The Art of Markup: hCalendar] by [http://www.stuffandnonsense.co.uk/ Andy Clarke]
* 2006-01-11 [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]

==Buttons==
This section is informative. Don't forget that you can add one of our [[buttons#hCalendar|buttons]] to the page, to indicate the presence of hCalendar microformats. For example: http://www.boogdesign.com/images/buttons/microformat_hcalendar.png. If you can link it back to this page (or even page on your website, about your use of the microformat), so much the better!

== Copyright ==
Per the public domain release on the authors' user pages ([[User:Tantek|Tantek Çelik]], [[User:Brian|Brian Suda]]) this specification is released into the public domain.

{{MicroFormatPublicDomainContributionStatement}}

== Patents ==
{{MicroFormatPatentStatement}}

== 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]
* [[rfc-2119| RFC 2119]]
* [[iso-8601|ISO8601]]

=== Informative References ===
This section is informative.
* [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://ietfreport.isoc.org/idref/draft-royer-ical-basic/ iCal-Basic (latest)] [http://www.faqs.org/ftp/pub/pub/internet-drafts/draft-royer-ical-basic-04.txt (draft 04)]
* [http://mycaal.com loan modification]
* [http://www.w3.org/TR/NOTE-datetime W3C Note on Date and Time Formats]
* [http://www.imc.org/pdi/ Internet Mail Consortium Personal Data Interchange vCard and vCalendar]
* Contributed from http://developers.technorati.com/wiki/hCalendar

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

==== Related 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]

== 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.

== Related Reading ==
This section is informative.
Some further reading on the broader topic of calendars and calendaring formats.
* [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>

== Related Pages ==
{{hcalendar-related-pages}}
* [http://en.wikipedia.org/wiki/HCalendar Wikipedia article on hCalendar]

[[Category:Specifications]]
[[Category:hCalendar]]

== Translations ==
Read the hCalendar specification in additional languages:
* [[hcalendar-fr|français]] (French)
* [[hcalendar-ja|日本語]] (Japanese)
* [[hcalendar-pl|Polski]] (Polish)
* [[hcalendar-ru|Русский]] (Russian)