On what date did Apollo 11 lift off from Earth?

Apollo 11 lifted off from Earth on July 16, 1969.

The Saturn V launched at 9:32 a.m. Eastern Daylight Time from Launch Complex 39A at Kennedy Space Center in Florida. Its crew were Neil Armstrong, Michael Collins, and Edwin “Buzz” Aldrin. The rocket first placed Apollo 11 into Earth orbit before its upper stage sent the spacecraft toward the Moon.

Several nearby dates are easy to confuse. Apollo 11 reached lunar orbit and landed on July 20, when Armstrong and Aldrin descended to the surface; the crew splashed down on July 24. Thus, July 20 was the landing date, not the launch date, while July 24 was the return date. The launch began the historic mission that achieved the first crewed lunar landing.