Time Zone Considerations
By default, the time zone for Teradata Database instances on AWS is set based on the region you choose when launching your instance. For example, if you launch an instance using the U.S. West region, instances are in the Pacific time zone. You can change the operating system time zone when launching the Teradata Database instance.
Teradata Data Mover, Teradata Data Stream Controller, Teradata Viewpoint, and Teradata REST Services default to the same time zone as the Database instance.
Teradata Server Management and Teradata Ecosystem Manager time zones default to UTC and cannot be changed.
See the Amazon User Guide for Linux Instances for information on changing the time zone on an instance.