Establishment of Time Zones

Date: March 19, 1918 • Location: Shaw, United States

The US Congress establishes time zones and approves daylight saving time.

The United States Congress is the legislative branch of the federal government of the United States. It is a bicameral legislature, including a lower body, the U.S. House of Representatives, and an upper body, the U.S. Senate. They both meet in the United States Capitol in Washington, D.C.