WASHINGTON (AP) _ This time Sunday, it will be an hour later than this time today.

That's because Daylight Saving Time starts at 2 a.m. Sunday - when the clocks jump to 3 a.m.

So, in 24 hours, clocks will have covered 25 hours, making the same moment be an hour later, by the clock.

Unless you forget to set your clock ahead tonight.

In that case, this time Sunday will be the same as this time today at your house - but nowhere else. So you'll be an hour late for everything.

Confused? Just remember to set your clock ahead to the next hour before retiring tonight.

You can pick up the lost hour's sleep in the fall.