Try out our new RRULE tool for creating RRULE compatible strings.

Property Name

DURATION

Purpose

This property specifies a positive duration of time.

Value Type

DURATION

Property Parameters

IANA and non-standard property parameters can be specified on this property.

Conformance

This property can be specified in "VEVENT", "VTODO", or "VALARM" calendar components.

Description

In a "VEVENT" calendar component the property may be used to specify a duration of the event, instead of an explicit end DATE-TIME. In a "VTODO" calendar component the property may be used to specify a duration for the to-do, instead of an explicit due DATE-TIME. In a "VALARM" calendar component the property may be used to specify the delay period prior to repeating an alarm. When the "DURATION" property relates to a "DTSTART" property that is specified as a DATE value, then the "DURATION" property MUST be specified as a "dur-day" or "dur-week" value.

Format Definition

This property is defined by the following notation:

 duration   = "DURATION" durparam ":" dur-value CRLF
              ;consisting of a positive duration of time.

 durparam   = *(";" other-param)

Example

The following is an example of this property that specifies an interval of time of one hour and zero minutes and zero seconds:

 DURATION:PT1H0M0S

The following is an example of this property that specifies an interval of time of 15 minutes.

 DURATION:PT15M

This document was automatically converted to XHTML using an RFC to HTML converter with the original text document at the Internet Engineering Task Force web site at ietf.org .  The original text document should be referred to if there are any errors or discrepancies found in this document.

Need to test your iCalendar feeds?

The iCalendar Validator provides developers and testers a method to validate their iCalendar feeds, which can take data from either a URL, file or text snippet and compare it against the RFC 5545 specification.  We believe we have one of the best iCalendar validation tools available on the internet. More information about the validator can be found here.