In the UK the clocks go forward 1 hour at 1am on the last Sunday in March, and back 1 hour at 2am on the last Sunday in October.
I will be staying in Bronwydd Avenue tonight along with house guests and after having watched the Wales New Zealand rugby. None of the clocks there auto-correct, so I must post reminders everywhere to tell me that it will be an hour earlier than they all say tomorrow morning.
Reading List: P.G. Wodehouse on 'Daylight Saving Time'.