This simple DataType is a DateTime used to define Coordinated Universal Time (UTC) values. All time values conveyed between OPC UA Servers and Clients are UTC values. Clients shall provide any conversions between UTC and local time.

It should be noted that the SourceTimestamp (see OPC 10000-4) and ServerTimestamp (see OPC 10000-4) may originate from different clocks that have no synchronization.