On 27 May 1937, the Golden Gate Bridge opened to pedestrians. Cars would wait until the 28th!
DST was a WWI effort. Germany was the first, in April 1916. The UK followed on 21 May 1916.
On 20 May 1927, Lindbergh left New York to become the first person to fly solo across the Atlantic. Five years later, Earhart would become the first woman to do so.