ISO

ISO 8601 extended format.

Examples of date/time in ISO 8601 format:

  • 2020-08-30T18:43

  • +12020-08-30T18:43:00

  • 0000-08-30T18:43:00.5

  • -0001-08-30T18:43:00.123456789

When formatting, seconds are always included, even if they are zero. Fractional parts of the second are included if non-zero.

Guaranteed to parse all strings that LocalDateTime.toString produces.