Yes, tonight is that night that you have to do that thing.
Daylight saving time arrives at 2 a.m. local time Sunday, March 10, ushering in several months of extra evening sunlight.
Some parts of the United States don't observe daylight saving time, including Hawaii, most of Arizona, Puerto Rico, the Virgin Islands, American Samoa, Guam and the Northern Marianas.
Daylight saving time will end Sunday, Nov. 3.
Public safety officials say this weekend is a good time to put new batteries in warning devices such as smoke detectors and hazard warning radios.