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TimeStamp Value

Each DeviceState list may optionally include a TimeStamp element so that the device can record the time at which the operational states were measured, when known. The (string) ISO 8601 time format (external) must be used to report:

  • An unqualified local time e.g. 2016-03-04T17:45:31.1234567, which corresponds to 17:45:31.1234567 local time on 4th March 2016.

  • A local time including the UTC time and a time zone offset e.g. 2016-03-04T17:45:31.123456+05.30 for the India Standard Time zone (+5.5 hours), which corresponds to 23:15:31.1234567 local time on 4th March 2016.

  • A UTC time using the Z time-zone designator e.g. 2016-03-04T17:45:31.1234567Z, which corresponds to 17:45:31.1234567 UTC on 4th March 2016.