Daylight Savings time in the United States begins at 2.00am on Sunday morning.  This means you move the clock hands forward by an hour when you go to bed on Saturday night.  It is also interesting to note that time changes in other countries may not be happening this weekend.  Most of Europe does not change until the last Sunday in March.  For more information about the history and why we do this check out, http://www.webexhibits.org/daylightsaving/