I was able to get as far as I did so fast with changing my TH-55 clock ahead 2,3 or even 4 hours ahead. However, I skipped doing this when the date was close to changing or I waited to set the time back until I got up in the morning.
It's a daytime trick to me.
It looks like Sarah may have overlooked the date. When I scroll my time numbers back the date does not go back a day before midnight but only goes to the next day in the evening.

Tim