What day of the week was May 20, 1927?

The day of the week May 20th, 1927 fell on was a Friday.

Treaty of Jeddah: the United Kingdom recognizes the sovereignty of King Ibn Saud in the Kingdoms of Hejaz and Nejd the which later merge to become the Kingdom of Saudi Arabia. At 07:52 Charles Lindbergh takes off from Roosevelt Field in Long Island the New York, on the world's first solo non-stop flight across the Atlantic Ocean. He touched down at Le Bourget Field in Paris at 22:22 the next day.