On one of the many mailing lists I’m on, someone asked if there was a simple clock program out there that would display UTC. Well, it just so happens that Vic, K2VCO, one of the regular contributors to the mailing list had written one. You can find it at http://www.qsl.net/k2vco/. It displays both the date and the time.
Someone else mentioned a program written by SV2AGW. AGWClock also looks like a good program, but I couldn’t get it to install on this old Windows98 laptop. Hopefully, you will have better luck with it than I did. You can find it at http://www.elcom.gr/sv2agw.