On March 18, 1965, the first spacewalk took place as Soviet cosmonaut Aleksei Leonov left his Voskhod 2 capsule and remained outside the spacecraft for 20 minutes, secured by a tether.

On March 18, 1837, Grover Cleveland, the only U.S. president who served two non-consecutive terms, was born. Following his death on June 24, 1908, his obituary appeared in The Times.