|innerjoin | iCalendar|
Mozilla Calendar adds a diary, 'to do' organiser and journal, based completely on Internet Standards, iCal and XML, to the Mozilla and Firefox browsers. Sunbird gives you the functionality in a stand-alone application.
Index of iCal test cases
Notes and Queries...
Description of the YYYYMMDD format
From RFC 2445, the even more basic:
Libraries and Server code