When I tried to re-image my system (upgrading to NVME on RPi 5). I was running into a date issue.
It would not update to the current date/time and because of that, one of the certificates was “Not yet valid”.
My solution was to boot the Pi with a monitor and keyboard and issue the commands:
login
date
followed by
date -s “2026-03-03 08:30:00”
(Using the format shown by the previous date command)
followed by a:
reboot now
command. The system started right up and was able to be restored from a backup.