Time change on March 11

Daylight Saving Time

USA - United States of America from 2007

FROM 2007: Daylight Saving Time begins for most of the United States at 2 a.m. on the second Sunday of March. Time will revert to standard time at 2 a.m. on the first Sunday in November.

http://wwp.greenwichmeantime.us/daylight-saving-time/usa/dst-2007.htm