ISO 8601
Date
- YYYY-MM-DD
Time
- hh:mm
- hh:mm:ss
- hh:mm:ss.sss
As a suffix to the time, a time offset is also supported (and recommended to avoid ambiguity).
- {TIME}Z — referring to Coordinated Universal Time (±00:00)
- {TIME}±hh:mm
- {TIME}±hh
Date/Time
For specifying the time on a specific date, a Date and Time may be joined with a T character.
- {DATE}T{TIME}