when did day light savings time start in the united states
1967
-1
Section::::History of DST in the United States.:1966–1972: Federal standard established.

Daylight saving time in the United States
16190896
6474572850603140798
NONE
Section::::History of DST in the United States.:1966–1972: Federal standard established.

Daylight saving time in the United States
16190896