Moon Day is celebrated on July 20 each year to commemorate the historic Apollo 11 mission, during which astronauts Neil Armstrong and Buzz Aldrin became the first humans to walk on the Moon in 1969. This day highlights the achievements of space exploration and the importance of scientific discovery. The celebration of Moon Day encourages educational activities related to astronomy and space science. Schools and organizations often host events, workshops, and discussions to inspire interest in NASA and future space missions, fostering a sense of curiosity about the universe and our place within it.