Atrasar el Reloj.

Set the clock back.

In Venezuela, we set our clocks back half an hour in December 2007.

In News:

"In just a few days, on November 6th, we are going to set our clocks back to standard time."

The Independent Newfoundland and Labrador.

On Websites:

The Time Fairy reminds you to set your clocks back one hour Saturday night.

Rick Dees Online.