Much of Canada, the United States and parts of Mexico change clocks this weekend
The semi-annual clock shuffle comes to an end this weekend, with much of Canada and the US moving clocks back an hour. That will put New York back to 5 hours behind London and to 5 hours behind GMT.
That's an extra hour of sleep for most of the continent. Greg is in one of those rare zones that don't change clocks so he will be a bit more refreshed every day.
