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Revision as of 22:23, 16 December 2019 by Tantek (talk | contribs) (needs update to 5445, note validator)
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<entry-title>iCalendar RFC 2445</entry-title>

⚠️ Warning: This page needs to be updated to be based on RFC 5445, moving old content to a History section for the legacy impact of 2445 on original hCalendar design etc.

RFC 2445, "Internet Calendaring and Scheduling Core Object Specification (iCalendar)", commonly referred to as iCalendar or iCal, formed the basis of the hCalendar microformat.

When normatively referencing RFC 2445 on this wiki, either do so by linking to this page with:


or directly to http://www.ietf.org/rfc/rfc2445.txt.


alternate references

Avoid linking to the informative HTML translation of rfc2445.txt, which you must explicitly do by avoiding simply using the string RFC 2445 in your text, as MediaWiki appears to auto-hyperlink it to the HTML translation thus: RFC 2445.

previous versions


vCalendar, sometimes referred to as "iCal 1.0", or vCal.

see also