AMAZING how people keep trying to guess what JESUS HIMSELF told us we cannot.
Unless a thief in the night is prone to call you ahead of time to say HE is coming.
I think there is a verse where Jesus tells us to be on watch for the season as in the fig tree as soon as the branches put forth their leaves signifies the coming of summer. Certainly the day and hour are reserved for the Father alone. But if we are on watch and we see the season, we can sound the alarm. If someone is on watch and they see the thief, they can sound the alarm and wake up the fellow servants to protect the masters house.