Why doesn’t my MacBook update the system clock time after sleep but instead shows time when last used?

For several months now, intermittently but frequently (maybe 70% of the time?) when I wake up my computer (2020 MacBook Pro, 2.3 GHz Quad-Core Intel Core i7, currently on Somona 14.7.6), it will count the time from the time when I put it to sleep. This also often happens on just closing the screen. It often corrects itself but this can take anything from 5 minutes to a couple of hours. I can force it to correct itself sooner by going to System Settings -> General -> Date & Time -> then toggle "Set time and date automatically" off then on again, but this is annoying to need to do multiple times a day (and sometimes needs multiple attempts to work). For example, I might put the mac to sleep on finishing work at 18:03 on Mon 14th, open it up at 08:55 on Tues 15th but the date / time shows as Mon 14 18:04. Half an hour later, it shows as Mon 14 18:34, then it might randomly correct itself to Tue 15 09:26. Then, suppose I break for lunch at 12:14, close the screen, open it again at 13:05, but the clock shows 12:15; time then progresses normally but lagging nearly an hour behind the real rime for another random amount of time, before eventually correcting itself again. --- Searching on this, this seems to be a not-uncommon problem with many threads dated 2023-2025, and can be temporarily fixed by a system update or deleting a (corrupted?) system file like sudo rm /var/db/timed/com.apple.timed.plist, but the issue usually returns and there seems to be uncertainty about what causes it, here's a few examples: - discussions.apple.com: Mac consistently showing wrong time after sleep > This fix seems to work for others. Run this command in the Terminal… sudo rm /var/db/timed/com.apple.timed.plist > > Reviving this thread, this issue has just returned. - reddit.com/r/applehelp/: Why isn’t the time on my Mac updating? > This is a known issue with Sonoma. The update was supposed to fix it. Are you on macos 14.5 (I'm seeing it on macOS 14.7.6 and another user reports getting it suddenly on macOS 12.7.2 so this isn't it) There's many other similar threads around 2023-25 (and some much older threads like this from 2006 system clock fails to update after waking from sleep - but that appears to be a different instance of a similar OS bug).