What does "duration PT24H" mean?

The string "duration PT24H" represents a duration in the ISO 8601 format.

Here's a breakdown:

- P: This is the duration designator. It indicates that what follows is a duration, not a specific date or time.

- T: This separates the date and time components of the duration. In this case, it is followed by the time part.

- 24H: This specifies the duration in hours. In this specific example, "24H" means 24 hours.

Therefore, "PT24H" means a duration of 24 hours. You often see this format used in various contexts, such as specifying the validity period for a token or a session, defining the length of an event, or setting time-to-live (TTL) values in caching systems.

For Example:

If you have a configuration setting like:

session_duration = "PT24H"

It means the session duration is configured for 24 hours. This notation is very useful in systems that need to represent time durations in a standardized, machine-readable way.

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