Who uses universal time?
Major users of highly precise universal time include astronomers, spacecraft tracking stations, science labs, military and civilian ships and aircraft, radio and TV stations, seismographers, geologists, power companies and ham radio operators. What is daylight savings time? Efforts to save daylight have been made in the United States and Europe since World War I, when the daylight savings time system first was adopted to conserve fuel for electric power for the war effort. During later times when there were no federal laws creating daylight saving time in the U.S., states and localities were free to observe it or not. This caused confusion for the broadcasting industry as well as for railways, airlines and bus companies. There was a hodgepodge of time observances and no agreement when to change clocks. The Uniform Time Act signed in 1966 established the national daylight saving time, although any state that wanted to be exempt could do so by passing a state law. The Uniform Time Act es
