Neil Armstrong was an American astronaut and the first person to walk on the Moon. He set his left boot on the surface of the moon at UTC July then spoke the famous words "That's one small step for [a] man, one giant leap for mankind.
“It suddenly struck me that that tiny pea, pretty and blue, was the Earth. I put up my thumb and shut one eye, and my thumb blotted out the planet Earth. I didn’t feel like a giant. I felt very, very small” - Neil Armstrong