1. This is not just a problem with the Sun Clock widget. Time.gov is offline. Can't even ping it.
2. Tried Mark's fix, no success. It appears that nist.time.gov may work differently (tho the image looks the same). Worse, every time you restart the widget, it finds (extracts?) a clean copy of script.js and everything else in the directory. Your edited version is gone.

Does the Fed work weekends? Maybe Monday morning time.gov will come back online.

I hope this widget is being fixed soon, I miss it terribly.

That script modification is beyond me. I don't play with the behind-the-scenes stuff. Somebody (Nelson, since he finked himself out?) is going to have to set this right for the rest of us. I posted a msg in the forum but no action at my last sighting of it. Sad--this has been one of my prime tools.

Change the following in the script.js file:
// get the current image
// xearth.src = "http://www.time.gov/" + xearthSrc(ThisMilliseconds);
xearth.src = "http://NIST.time.gov/" + xearthSrc(ThisMilliseconds);

Found the following: http://nist.time.gov/timezone.cgi?Central/d/-6/java. It may be possible to take the feed from here. Looking.