Only 12 Humans Have Walked on the Moon THE SELECT 12 What were they doing up there? Of the billions and billions of people that have walked on the Earth, only a select 12 have walked on the Moon. If you combined all the time that they spent walking on the Moon, it is still less than 4 days! Who When How Long Neil Armstrong 7/20/69 2 hr. 31 min. 40 sec. Edwin "Buzz" Aldrin 7/20/69 2 hr. 31 min. 40 sec. Charles (Pete) Conrad 11/19/69 7 hr. 45 min. 18 sec. Alan Bean 11/19/69 7 hr. 45 min. 18 sec. Alan Shepard 2/5/71 9 hr. 22 min. 31 sec. Edgar Mitchell 2/5/71 9 hr. 22 min. 31 sec. James Irwin 7/30/71 18 hr. 34 min. 46 sec. David Scott 7/30/71 18 hr. 34 min. 46 sec. Charles Duke 4/21/72 to 4/23/72 20 hr. 14 min. 16 sec. John Young 4/21/72 to 4/23/72 20 hr. 14 min. 16 sec. Harrison Schmitt 12/11/72 to 12/13/72 22 hr. 3 min. 57 sec. Eugene Cernan 12/11/72 to 12/13/72 22 hr. 3 min. 57 sec.