to be fair, grace period length is never specifically stated in the rules, and is extremely generic. Daenym can pretty much get away with a grace period of however long he wants, and since majority is unannounced, he can pretty much update whenever he wants and be in the right.
And with this early of deadlines as have happened so far, "A little while" is not 3 hours. It's a lot less.
Credit to Bummer
for the avatar.