About HowLong.info

Consciously or unconsciously, we ask ourselves "how long" type of questions dozens of time each day. Whether it is to satisfy our own curiosity, enrich a conversation, organize our dayly agenda, or plan for the future, knowing how long things took or will take is key in our fast-phased world.

Here at HowLong.info we've put together an extensive, evergrowing database of answers to these type of questions. The simple and straightforward answer to whichever "how long will it take" question you might be asking yourself today, with no bluff, no ornaments, just the straight-to-the-point answer you are looking for in order to keep going.


How long did the Apollo 11 crew remain on the moon’s surface?

21 hours, 36 minutes, and 21 seconds

The Apollo 11 crew spent a total of 21 hours, 36 minutes, and 21 seconds on the moon. They conducted scientific activities during their time there and collected 47 pounds of lunar material samples to be brought back to Earth for study.

Neil Armstrong became the first human ever to set foot on the moon when he stepped off the ladder of the lunar module Eagle at 10:56pm EDT on July 20, 1969.

The crew left the moon’s surface and began their return voyage back to Earth on July 21, 1969. The Apollo 11 astronauts splashed down in the Pacific Ocean 900 miles southwest of Hawaii at 12:50pm EDT on July 24, 1969. They were recovered by recovery forces onboard the USS Hornet and returned safely home.

The Apollo 11 mission was a huge success, paving the way for future lunar exploration. It made history as the first manned mission to land on the moon and return safely back to Earth. The mission demonstrated that humans could indeed explore outer space and survive in harsh conditions outside of Earth’s atmosphere.