How many hours was Apollo 11 have on the moon?

Apollo 11 spent approximately 21 hours on the lunar surface during its mission. Astronauts Neil Armstrong and Buzz Aldrin were on the moon for about 2.5 hours while conducting extravehicular activities, including the famous first moonwalk and collecting lunar samples. The remainder of the time was spent in the lunar module, performing various tasks and preparing for their ascent back to the command module.