This is the weekend we turn our clocks forward 1 hour as we begin Daylight Saving Time.  Why do we do this? The goal is to save energy, but others say it's really no savings on electricity because more people are out doing things in the evening. We wondered how long we've been doing this.  

After doing a little checking we found that President Franklin Roosevelt instituted year-round Daylight Saving Time, called "War Time," from February 9, 1942 to September 30, 1945. [See law]

From 1945 to 1966, there was no federal law regarding Daylight Saving Time, so states could decide if they would observe it. But this caused lots of problems with airline, bus and rail schedules.

On January 4, 1974, President Nixon signed into law the Emergency Daylight Saving Time Energy Conservation Act. That's when we began observing Daylight Saving Time nationwide.