daylight savings.

really?

here is an official reason: http://www.energy.ca.gov/2007publications/CEC-200-2007-001/CEC-200-2007-001.PDF

this is the short: 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.

and the governments main reasons are…

  1. Daylight Saving Time saves energy.
  2. Daylight Saving Time saves lives and prevents traffic injuries.
  3. Daylight Saving Time prevents crime.

http://www.energy.ca.gov/daylightsaving.html