CURRENT_UTC_TIMESTAMP()

Return the UTC date and time when the current transaction starts. This value does not change during the course of a transaction and does not reflect the individual start times of statements within a transaction.

CURRENT_UTC_TIMESTAMP()

The parentheses are required. The return type is TIMESTAMP.

For example:

premdb=# select current_timestamp, current_utc_timestamp() from sys.const;
             now              |   current_utc_timestamp   
------------------------------+---------------------------
 2019-09-12 17:23:54.85683-07 | 2019-09-13 00:23:54.85683
(1 row)

premdb=# select current_utc_timestamp()-current_timestamp from sys.const;
 ?column? 
----------
 07:00:00
(1 row)

premdb=# select extract(week from current_utc_timestamp()) from sys.const;
 date_part 
-----------
        37
(1 row)