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hCalendar (short for HTML iCalendar) is a microformat standard for displaying a semantic (X)HTML representation of iCalendar-format calendar information about an event, on web pages, using HTML classes and rel attributes. It allows parsing tools (for example other websites, or browser add-ons[೧] like Firefox's Operator extension) to extract the details of the event, and display them using some other website, index or search them, or to load them into a calendar or diary program, for instance. Multiple instances can be displayed as timelines.


Consider this semi-fictional example:

 The English Wikipedia was launched
 on 15 January 2001 with a party from 
 2-4pm at 
 Jimmy Wales' house 
 (more information).

The HTML mark-up might be:

 The English Wikipedia was launched 
 on 15 January 2001 with a party from 
 2-4pm at 
 Jimmy Wales' house 
 (<a href="http://en.wikipedia.org/wiki/History_of_Wikipedia">more information</a>)

hCalendar mark-up may be added using span HTML elements and the classes vevent, summary, dtstart (start date), dtend (end date), location and url:

<p class="vevent">
 The <span class="summary">English Wikipedia was launched</span> 
 on 15 January 2001 with a party from 
 <abbr class="dtstart" title="2001-01-15T14:00:00+06:00">2</abbr>-
 <abbr class="dtend" title="2001-01-15T16:00:00+06:00">4</abbr>pm at 
 <span class="location">Jimmy Wales' house</span> 
 (<a class="url" href="http://en.wikipedia.org/wiki/History_of_Wikipedia">more information</a>)

Note the use of the abbr element to contain the machine readable, ISO8601, date-time format for the start and end times.

Accessibility concerns[ಬದಲಾಯಿಸಿ]

Concerns have been expressed[೨] that, where it occurs, the use of the abbr element (using the so-called abbr-design-pattern) in the above manner causes accessibility problems, not least for users of screen readers and aural browsers. Work is underway to find an alternative method of presenting ISO8601 date-time information.[೩]


The Geo microformat is a part of the hCalendar specification, and is often used to include the coordinates of the event's location within an hCalendar.


For a full list of attributes, see the hCalendar cheat-sheet.


Notable organisations and other websites using hCalendar include:


External links[ಬದಲಾಯಿಸಿ]

"https://kn.wikipedia.org/w/index.php?title=HCalendar&oldid=788684" ಇಂದ ಪಡೆಯಲ್ಪಟ್ಟಿದೆ