A datetime (timestamp in SQL) that is time zone aware, usually by storing time zone information along with the datetime. Data type defined in the SQL standard.
A datetime (timestamp in sql) that is timezone aware, usually by storing time zone information along with the datetime.
datatype defined in standard-sql.
Note that postgresql, different from most other relational-databases, stores this data type as timestamp in utc, so that time zone information is not preserved upon retrieval.