Date/time formatting

iSHARE adopts internationally recognised standards for expressing dates and times:

• UTC (Coordinated Universal Time) – Time standard unaffected by time zones or daylight saving time.

• Unix Timestamp – The number of seconds elapsed since the Unix epoch (1970-01-01T00:00:00Z, UTC).

  • Example: 1536089675 represents 2018-09-04T19:34:35Z.

• RFC3339 / ISO 8601 Date-Time Format – A human-readable and machine-parseable representation of date and time in UTC, using the Z suffix (as defined in ISO 8601 and RFC 3339).

  • Example: 2025-09-22T14:05:30.123Z.

Requirement All date-time values MUST be expressed in UTC and MUST follow the ISO 8601 extended date-time format with milliseconds, and the Z UTC indicator, e.g. YYYY-MM-DDTHH:MM:SS.sssZ.

Unless explicitly specified, ISO8601 date-time in UTC is the default format. An exception is, for example, the iSHARE JWT, which specifies the use of a Unix Timestamp (in line with the JWT standard).