Calendars

Formats specific to the storage and transmission of calendars, datebooks, event listings, etc.

See also Address books and contacts and Date and time formats.

Calendars

 * Calendar Creator (.bcc)
 * DeskMate Calendar (.cal)
 * h-event (formerly hCalendar) (Microformats)
 * iCalendar (.ics)
 * vCalendar (.vcs)
 * Windows 3.x Calendar (.cal)

System event schedulers

 * crontab (Unix-like systems)
 * Windows Task Scheduler
 * Task Scheduler Schema (XML)
 * Windows Task Scheduler JOB file (Binary)

Miscellaneous

 * Notes Storage Facility (Lotus Notes; holds calendars, contacts, e-mail, and other things)
 * Personal Folder File (Microsoft Outlook; holds calendars among various other things)
 * Time Zone Database (used to convert between local and UTC times)