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HCalendar

( Microformats )

Example
Accessibility concerns
Geo
Attributes
Users
References
External links

C O N T E N T S

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hCalendar (short for HTML iCalendar) is a microformat standard for displaying a semantic HTML representation of iCalendar-format calendar information about an event, on web pages, using HTML classes and Rel attribute.

It allows parsing tools (for example other websites, or browser add-ons Microformats.org: Browser Support for Microformats 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.

Example

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
   (more information)

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

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

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

Accessibility concerns

Concerns have been expressed Web Standards Project, hAccessibility: Abbreviations in Microformats 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. Microformats Wiki: Assistive Technology The newer h-event microformat therefore uses the HTML5 element time instead: 30^th June 2013, 12:00

Geo

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.

Attributes

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

Users

Notable organisations and other websites using hCalendar include: