PT4H
PT4H is an ISO 8601 duration designator that specifies a time interval of four hours. The notation begins with P to indicate a period, then T to separate the date and time components. Because the value includes only time components, there are no days, months, or years in PT4H.
As a duration, PT4H represents four hours, which is equivalent to 240 minutes or 14,400 seconds. It
PT4H can be combined with other components to form longer durations, such as P1DT4H (one day and
In practice, PT4H appears in scheduling, data formats, and APIs that adopt ISO 8601 durations. It is
Notes on parsing and usage: many programming languages and libraries provide ISO 8601 duration parsers, and