4.3.6 Duration

Basic Definition | Formal Definition | Description| Example

Basic Definition

Value Name
This value type is used to identify properties that contain a duration of time.

Formal Definition

The value type is defined by the following

  dur-value  = (["+"] / "-") "P" (dur-date / dur-time / dur-week)

  dur-date   = dur-day [dur-time]
  dur-time   = "T" (dur-hour / dur-minute / dur-second)
  dur-week   = 1*DIGIT "W"
  dur-hour   = 1*DIGIT "H" [dur-minute]
  dur-minute = 1*DIGIT "M" [dur-second]
  dur-second = 1*DIGIT "S"
  dur-day    = 1*DIGIT "D"


If the property permits, multiple "duration" values are specified by a COMMA character (US-ASCII decimal 44) separated list of values. The format is expressed as the [ISO 8601] basic format for the duration of time. The format can represent durations in terms of weeks, days, hours, minutes, and seconds.

No additional content value encoding (i.e., BACKSLASH character encoding) are defined for this value type.


A duration of 15 days, 5 hours and 20 seconds would be:


A duration of 7 weeks would be: