All known current computer operating systems now support system calls to obtain UTC (universal time coordinated, also known as GMT or Greenwich Mean Time) that is a standard for time around the world. The ability to return UTC usually involves calling the operating system API for date and time and specifying GMT or UTC as the time standard.
UTC is often required in enterprise and Internet applications where a single time standard is needed for many reasons.
Currently, the REXX language standard functions for DATE and TIME builtin functions do not support returning UTC. My suggestion is to add the ability to use UTC as the time standard for both DATE and TIME functions, not as a default, but as an optional operation.
Availability of UTC in REXX language standard will bring the language into compliance with world-wide applications and improve the universality of the language standard.