I've put together a little auto folder utility for Falcons with failed NVRAM battery.
https://github.com/dh219/falcdate/releases
I dug my old bird out of the loft recently and decided I didn't fancy hacking around with the chip to get a new battery in place. I found a little utility to set the NVRAM system preference from floppy on first boot, but didn't like the interface and had to keep setting the clock anyway. But I had an internet connection...
So I present Falcdate: this little tool sits at the tail end of your auto folder after whatever you have that establishes your internet connection runs (it does require an internet connection for clock setting), reads its settings from a plain text configuration file that sits next to it in the auto folder (and reboots if it finds a change), then sets the system clock from time.nist.gov.
There are two versions, a STiK-based Pure C version (smaller) and a MiNTnet based gcc variant. Both do the same thing.
Please feel free to report issues on here or on github, but I can't promise rapid support as it does the job for me!

Is there a central repository of free Atari software (like the old umich or funet archives) these days to plonk it on?
Cheers,
BW.