Usually, I sync my PC to Internet time using https://www.worldtimeserver.com/atomic-clock/ . I am not sure if later versions of Windows 10 or 11 do this Internet time synchronisation automatically and, if so, how often.
For some reason, I am unable to sync with this time server today, so I have gone on TX anyway on 8m FT8 and 10m WSPR hoping the PC clock is right.
If you know about Windows and sync to Internet time, please let me know.