https://knowhow.redbarrel.net/miscellaneous/a_short_history_of_daylight_savings_time/index.htmlSummary of Daylight Savings Changes Year Legislation Sitting President DST Start DST End Intention Result 1918-1919 Standard Time Act of 1918 Woodrow Wilson Last Sunday in March Last Sunday in October Summer seven-month fuel-conservation measure during World War I Being deeply unpopular it was repealed just a year later, overriding Presidential veto 1919-1942 Municipal DST Woodrow Wilson-FDR varies varies Local municipalities were allowed to observe DST or not, resulting in “Clock Chaos” Train, bus, and TV broadcasting schedules were impossible to reconcile 1942-1945 War Time Act Franklin Delano Roosevelt year-round year-round Year-round DST imposed during World War II, after the bombing of Pearl Harbor, for energy conservation Tolerated by the populous due to the ongoing war but reversed when all other war legislation ended 1945-1966 Municipal DST FDR-Lyndon B. Johnson varies varies Local municipalities were allowed to observe DST or not, resulting in “Clock Chaos” Train, bus, and TV broadcasting schedules were impossible to reconcile 1966 Uniform Time Act of 1966 Lyndon B. Johnson Last Sunday in April Last Sunday in October Set standard timezones and annual DST dates, to end the chaos of local DST preferences Public relief regarding the patchwork of time changes in small areas, though Arizona and Hawaii eventually opted-out 1974 Emergency DST Energy Conservation Act Richard Nixon year-round year-round Year-round DST starting in January 1974, to reduce fuel consumption as a result of the 1973 OPEC embargo against the US that caused massive lines at gas stations Major public backlash as children walked to school in the dark, traffic accidents spiked, and some cities wouldn’t see daylight until 9AM. Repealed early in the fall of 1974, returning to annual DST on the 1966 schedule. 1986 Federal Fire Prevention and Control Act Amendments Ronald Reagan First Sunday in April Last Sunday in October purely economic stimulation, in spite of the fire fighting funding intention of the original bill concerns about dark mornings for schoolchildren were raise, but were defeated by data showing early April sunrises did not compete with school start times 2007 Energy Policy Act of 2005 George W. Bush Second Sunday in March First Sunday in November An additional three weeks of DST in the spring, and one week in the fall. Lobbied heavily by economic interest groups to increase after work shopping hours DST now starts the 2nd Sunday in March and ends the 1st Sunday in November (after Halloween) Beginnings Daylight Savings Time (DST) was not conceived as a way for farmers to have more light at the end of the day during crop-growing months1. It was first adopted in Germany and Austria-Hungary in 1916 during World War I; as a fuel conservation measure2. With this, more coal and fuel could be diverted to the war (less being needed in the summer evenings now that daylight lasted an hour longer). The US first adopted DST in 1918 under the Standard Time Act, also as a fuel-saving measure, after the US entered the war in April of 19173.Hugoen-us