Daylight Savings Begins
- What
- Daylight Savings Begins
- When
- 3/12/2023
When did daylight saving start and why?
DST was first implemented in the US with the Standard Time Act of 1918, a wartime measure for seven months during World War I in the interest of adding more daylight hours to conserve energy resources. Year-round DST, or "War Time", was implemented again during World War II.