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

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