Due to Elwood Downey (WB0OEW) passing in January 2026, the software HamClock is out of production and all HamClock installations will cease to function in June 2026.

A replacement is OpenHamClock, which is very easy to use.  You can just visit this website, enter a little configuration information such as your call sign and grid square and you are up and running in a browser. 

You can also download and install your own implementation on a Windows, Linux, or RasPI of your own.    https://github.com/accius/openhamclock