A Time Zone is represented by a signed offset from Universal Coordinated Time (UTC). It is expressed in the format:

    <sign>hh:mm

For example, the UTC offset on the west coast of the United States is “-08:00” –local time on the west coast is 8 hours and 0 minutes ahead of UTC.

Sytem.DateTimeOffset supports Date, Time and UTC Offset components.

The TdTimeWithTimeZone and TdTimestampWithTimeZone Provider Specific Types maintains information about the UTC offset.