DST

DST

Daylight

Saving

Time

1987 - 2006

observed for about seven months each year.

1966

Uniform Time Act established by Congress

DST would

begin: last Sunday of April

end: last Sunday of October.

1942

President Franklin D. Roosevelt instituted year-round DST

“War Time”, was in force during World War II

In the US,

“Fast Time”

first introduced in 1918

President Woodrow Wilson signed it into law to support the war effort during World War I.

with hopes to save energy:

1974

extended to a period of ten months

1975

changed to eight months