July 20, 1969: The Date Depends on Where You Were Standing

The Space Race · July 20, 1969

Buzz Aldrin on the lunar surface, with the photographer reflected in his visor

Buzz Aldrin on the lunar surface, with the photographer reflected in his visor · NASA photograph, public domain (PD-USGov-NASA), via Wikimedia Commons

Americans remember the first step as July 20. Much of the rest of the world remembers July 21, and both are right: Armstrong stepped off the ladder at 10:56 p.m. Eastern Daylight Time on the 20th, which was 02:56 Universal Time on the 21st. Almost every account that gets the date wrong is quietly mixing the two.

The picture everybody knows is not of Armstrong. It is Aldrin, standing on the Sea of Tranquility, with Armstrong reflected in the gold visor along with the lander and the long shadows of a lunar morning. There are very few photographs of Armstrong on the surface, because he was carrying the camera.

They were outside for about two and a half hours, collected 47.5 pounds of rock and soil, and left behind a seismometer, a laser reflector still in use, and a plaque. The flag, as later photographs from orbit suggest, was probably blown over by the ascent engine when they left.

On the record

  • First step: 10:56 p.m. EDT July 20, 1969 = 02:56 UTC July 21, 1969.
  • The famous visor photograph (AS11-40-5903) shows Aldrin; Armstrong is the reflection.
  • The moonwalk lasted about 2 hours 31 minutes and returned 47.5 pounds of samples.
  • The retroreflector left at Tranquility Base is still used for laser ranging today.

🎵 For an original soundtrack inspired by the era, explore 1950s doo-wop and slow-dance ballads, new albums every week on the lovesong1950s channel.

Music on this channel is composed and produced with AI tools; the songs, stories, and artwork are original works created for lovesong1950s.

Sources: NASA — Apollo 11 mission overview · Image file at Wikimedia Commons.

More to read: the lovesong1950s home page · every post from October 2026

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