Germany was the first to adopt daylight saving time on May 1, 1916, during World War I as a way to conserve fuel. The rest of Europe followed soon after. The United States didn't adopt daylight saving time until March 19, 1918. It was unpopular and abolished after World War I.

Why did they start daylight savings time?

Germany established DST in May 1916 as a way to conserve fuel during World War I. The rest of Europe came onboard shortly thereafter. And in 1918, the United States adopted daylight saving time.

How did daylight savings time start in the US?

The Uniform Time Act of 1966 (15 U.S. Code Section 260a) [see law], signed into Public Law 89-387 on April 12, 1966, by President Lyndon Johnson, created Daylight Saving Time to begin on the last Sunday of April and to end on the last Sunday of October.