The Brookston Almanac

Budoha Day (Hawaii)
Wesak (Buddha’s Birthday)
Set-Your Clock-Forward-Day
Daylight Saving Time begins; turn your clock ahead at 2:00 a.m. [ wikipedia / Gov’t Explanation / World Times Zones / Web Exhibit ]

According to the California Energy Commission:

The Energy Policy Act of 2005 was passed by Congress and then signed into law by President George W. Bush on August 8, 2005. Under the new law, Daylight Saving Time begins three weeks earlier than previously, on the second Sunday in March. DST is extended by one week to the first Sunday in November. The new start and stop period begins March 2007.

The original House bill would have added two full months, one in the spring and another in the fall. According to some U.S. senators, farmers complained that a two-month extension could adversely affect livestock, and airline officials said it would have complicated scheduling of international flights. So, a compromise was worked out to start DST on the second Sunday in March and end the first Sunday in November.