Issaquah, get ready to increase your natural Vitamin D high.

Daylight Saving Time is set to begin this Sunday, March 14 at 2 a.m., local time.

Before you go to bed Saturday night – “spring forward” one hour, so 2 a.m., Sunday morning, becomes 3 a.m.

Standard time is moved forward an hour, effectively moving an hour of daylight from the morning to the evening and gives residents an extra hour sunlight – when it shines – after work. Clocks are set to change back this year on Sunday, November 7.

The exact dates of the time change are subject to the vagaries of the calendar and sometimes politics. In 2007 the start and end dates were changed to study the effects of Daylight Saving on energy consumption.

Daylight Saving first began in the U.S. in 1918 and US Congress can change the dates back after the study is done.