The International Association of Fire Chiefs is hoping you don't just change the clocks tonight.
They have partnered with Energizer batteries for the Change Your Clock - Change Your Battery campaign.
It urges homeowners to change the batteries in your smoke alarms and carbon monoxide meters as well tonight.
Officials say insuring you have a working smoke alarm can cut your risk of dying in a house fire by half.
They say, 96 percent of American homes have smoke alarms, and of those, 23 percent don't have a smoke alarm that works.
This is normally due to dead or missing batteries in the alarm.