H-event
From MozillaWiki
h-event is a simple, open format for publishing events on the web, using a 1:1 representation of iCalendar (RFC5445) VEVENT properties and values in HTML. h-event is one of several open microformat standards.
- Firefox 3+ supports hCalendar.
- Install the Operator Add-on to view and use h-event events in pages.
See the h-event specification for more: