One more tweak to my request, if I may.
Looking at 10.3.52 (9/21/2018) on Android I don't see UTC implemented yet.
If/when that comes to pass, I still think it would be a good idea to have the selection in Menu/Setup as originally suggested which would apply accross the app.
But alternatively for Current Time instruments it ought to be adjustable in Customize/Instrument_Options. This option would allow the user to place two Current Time instruments, one UTC, one Local. It would also be good to tap on any Current Time instrument and watch the Time toggle to the other time zone whichever that is for a second or two. The instrument header or time window should also show UTC, EST, EDT, etc. as appropriate. Thus on a crowded screen layout with limited space available a single Current Time instrument can display time in both zones.
And for Local time, instead of Local AM/PM, I wonder if I should have suggested Local 24Hr at least as an option.
Thanks,
DJ