The HTML mark up produced by this template includes an hCalendar microformat, which makes the event details parsable by computers, either acting automatically to catalogue article across Wikipedia, or via a browser tool operated by a person, to (for example) add the subject to a calendar or diary application.
Dates will only appear if you use {{Start date}} or {{End date}} (use the former for single dates). As an alternative, you may use or {{Start-date}} and {{End-date}}.
hCalendar uses HTML classes including:
Please do not rename or remove these classes; nor collapse nested elements which use them.