On Saturday night, November 1, before you go to bed, you should change the time on your clocks. Move the time BACK one hour. The time changes in the middle of the night, but if you change your clocks before you go to sleep, then they will be correct when you wake up.
Here is an example:
If you go to bed at 11:00 p.m., you should change your clocks to 10:00 p.m.
Your cell (mobile) phone will probably change by itself. You will not need to change it. However, you will need to change all of your other clocks. Don’t forget the clock in your car!