HCalendar

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 HTML elements 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 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. The newer h-event microformat therefore uses the HTML5 element time instead: 30th 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: • Birmingham Town Hall and Symphony Hall • Facebook • Google (in Google maps and in Search Engine Results Pages ) • The Opera web browser website • The Radio Times • The University of Washington • Yahoo!, on Yahoo! Local ==References==