July 20 is the 201st day of the year in the Gregorian calendar, with 164 days remaining until the end of the year. It is often associated with various historical events and celebrations around the world. One of the most notable events that occurred on this date is the Apollo 11 moon landing in 1969, when astronauts Neil Armstrong and Buzz Aldrin became the first humans to walk on the moon. This achievement marked a significant milestone in space exploration and is celebrated annually as Moon Day.