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Glossary Data & Encoding

iCalendar (.ics)

iCalendar is the standard text format for calendar events and invitations, stored in .ics files that calendar apps import.

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In more detail

An event sits between BEGIN:VEVENT and END:VEVENT with fields such as SUMMARY, DTSTART:20261003T143000Z and DTEND. A trailing Z marks UTC; without it, times are floating or tied to a named time zone.

Try these tools

iCal/ICS Event Generator

Generate a standard .ics calendar event file from a title, date, time, and location -- importable into Google Calendar, Outlook.

See also

  • Glossary vCard
    A vCard (.vcf file) is a standard text format for contact details that phones and email programs can import.
  • Glossary UTC
    UTC is the global reference time standard from which all time zones are defined as offsets.
  • Glossary ISO 8601
    ISO 8601 is the international standard for writing dates and times unambiguously, in the order year, month, day.
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