The Reader’s Notebook: Daylight Savings Time

Mar 31, 2021

This sign advertised a postcard campaign to lobby on behalf of passing the daylight saving bill in 1918.
Credit Library of Congress

March 31, 2021 -- During World War I, in an effort to conserve fuel, Germany began observing DST on May 1, 1916. The rest of Europe soon followed. The plan was not adopted in the United States until the Standard Time Act of March 19, 1918, which confirmed the existing standard time zone system and set summer DST to begin on March 31, 1918.