TimestampTai ::= INTEGER { utcStartOf2004(0), oneMillisecAfterUTCStartOf2004(1) } -- number of elapsed milliseconds since 00:00:00 UTC January 1, 2004, including leap seconds
TimestampIts ::= INTEGER { utcStartOf2004(0), oneMillisecAfterUTCStartOf2004(1) } (0..3153600000000) -- number of elapsed milliseconds since 00:00:00 UTC January 1, 2004, including leap seconds