Heh, I know of a major health record software that can’t handle time zones. So the hospital system has its instances sharded that way.
Once you cross a time zone, your records are much harder to access.
Once you cross a time zone, your records are much harder to access.
There were many potential patient safety issues due to mishandling of times during that hour and the suggestion to just use the backup worked because it happens at 1 AM when little is going on other than emergencies which simply have to to manage with read-only access during that time.
I kinda like the idea of regular scheduled downtimes of stable systems, just for real experience on downtime procedures.