Daylight Saving Time ends at 2 a.m. on Sunday, Oct. 29. Beginning in 2007, Daylight Saving Time will be extended one month and begins for most of the United States at 2 a.m. on the second Sunday in March (March 11). It will run to the first Sunday of November (Nov. 4). The new starts and stop dates were set in the Energy Policy Act of 2005.