A Timeline for Apollo 11
Timeline: Blast-off for a Trip to the Moon
7:45AM – The closeout crew sealed the hatch, and they purged and pressurized the cabin to make it safe for launch. That means the cabin was explosion-free.
8:30 AM - The closeout crew left the launch pad.
9:32 AM – Apollo 11 launched.
9:35 AM - The 1st stage engines shut down and dropped into the ocean.
9:41 AM – The 2nd stage rockets cut-off and fell into the ocean.
9:44 AM – Apollo 11 entered the earth’s orbit.
12:22 PM - After circling the earth 1-1/2 times, they fired the 3rd stage engine sending Columbia on its way to the moon.
12:52 PM – Michael Collins separated Apollo from the 3rd stage rocket. He turned Columbia
(command module) around and parked its nose next to the Eagle (lunar module). The discarded rocket was thrown into an orbit around the sun so it wouldn’t run into Eagle or Columbia.
My source for the dates and times is https://en.wikipedia.org/wiki/Apollo_11. I converted the time to Eastern Standard, hopefully correctly, to make things easier for you. I didn’t see any events for July 17th or 18th. My guess is that the Apollo astronauts kept Columbia ship-shape, talked to NASA Mission Control in Houston, and monitored conditions aboard their spaceship.
July 19th - 1:22 PM Apollo sailed behind the moon, then fired its engine to begin lunar orbit. They circled the moon 30 more times, and they scanned the surface for the Sea of Tranquility.
July 20th - 8:52 AM - Neil and Buzz climbed into the Eagle and prepared to leave Columbia behind.
1:44 PM – Eagle and Columbia separated. Eagle made a spin so Michael could check to make sure the spaceship wasn’t damaged and that its landing gear was correctly positioned. It was!
As Eagle headed towards the moon, the two astronauts noticed they were passing landmarks 2-3 seconds early. Eagle was moving too fast, and it would land miles west of their target.
Five minutes into the descent and 6000 feet above the moon, about a mile, an alarm went off. It signaled that the computer couldn’t do all its jobs on time so its software postponed a few. Eagle continued downward.
Neil focused again on the landing target – it was covered in boulders. He took partial control of the Eagle. Buzz called out navigation info. At 250 feet Buzz saw a crater in the new landing site. At 100 feet, the fuel supply was dwindling, and they had to land soon. The astronauts had 90 seconds of fuel left before they crashed. Dust was kicking up, and it was hard to see, but Neil used some large rocks to guide him.
A few seconds later a probe hanging from the footpads of the lunar module touched the moon, setting off a light. Neil was supposed to shut down the engine, but he forgot. The NASA engineers were afraid Eagle’s exhaust would cause an explosion. It didn’t! Three seconds later Eagle landed, and Neil shut down the engine. They had only 25 seconds of fuel left.
4:17 PM – A second later, Neil said, “Houston, Tranquility Base here. The Eagle has landed.” Ground Control said, “Roger, Twan – Tranquility, we copy you on the ground. You got a bunch of guys about to turn blue. We’re breathing again. Thanks a lot!
Dr. Robert Bryant from NASA sent me the video link below. Neil will take you through the
last 3-1/2 minutes of the moon landing. The screen will split in two. You’ll see what the astronauts saw on their way down. You’ll also see what Google could show us in 2011. https://www.lpi.usra.edu/lunar/documents/moonLanding/https://www.lpi.usra.edu/lunar/documents/moonLanding/
Timeline: Prepping for a Moonwalk
6:47 PM – Buzz radioed NASA for a pre-approved message. He asked listeners to take a moment to think about the landing. Then he asked everyone to give thanks. Buzz did – by taking communion privately.
7:43 PM - Neil and Buzz started getting ready for their moonwalk. On Earth it took 2 hours. On the moon, 3-1/2. Then they depressurized Eagle.
10:39 PM - Eagle’s hatch opened. Neil, in a space suit, struggled to squeeze out the door. Would
you believe the two astronauts had their highest heart rates going in and out of that hatch?
10: 51 PM - Neil climbed down the ladder, but he couldn’t see his feet. Why not? The camera remote control that he wore blocked his view. The shots were grainy, but Neil got them.
10: 56 PM - Neil stepped off the ladder and said “That’s one small step for man, one giant leap for
mankind.” Neil planned to say ‘a man,’ but either he slurred the words, or the camera did. Recent study says camera static caused the omission.
11:03 PM - Neil collected a soil sample and put it in the pocket of his space suit, in case of
emergency. One of the mission’s key jobs was to figure out what the moon was made of.
11:15 PM - Neil picked up the camera and took a sweeping shot of the moon. Then he put it on a tripod. Buzz climbed down the ladder. His comment, “Magnificent Desolation.”
Then the two astronauts tested the moon’s gravity. It is 1/6 of the Earth’s. Neil said it was easier than their practice sessions on Earth. Two small problems, they felt like they were constantly tipping backwards, and the ground was a little slippery, but the astronauts kept their balance. Loping along was the best way to move, but they had to plan their path 6-7 steps ahead.
Then the astronauts planted the flag in front of the camera. Buzz hoped nothing would go wrong, but the flagpole only went a couple inches into the ground. Buzz was afraid it’d fall over in front of their worldwide audience. He saluted it, and then President Richard Nixon’s voice came on the telephone-radio system. He said it was “the most historic phone call ever made from the White House.” He made a short speech, following the advice of astronaut, Frank Borman.
Then the astronauts had another 30 minutes on the moon. They set up an experiment to measure moonquakes. They also took pictures and
gathered soil samples, but time was flying so they stopped labeling them. Neil was moving so fast, and his metabolic rates were so high, that Mission Control sent him a coded message to slow down.
Their body rates remained low so NASA gave the astronauts 15 more minutes. That first moonwalk was limited in time and distance because NASA didn’t know how much water their bodies would need to control their temperature.
Buzz went back inside the Eagle first. They used a pulley to get their 48 pounds of soil on board. Then Neil reminded Buzz to throw down the memorial
bag. It honored the fallen astronauts from Apollo 1 and Soviet cosmonauts Vladimir Komarov and Yuri Gagarin. It also included a gold olive branch, and goodwill statements from leaders around the world. Then Neil climbed aboard, and they turned on the LM life support. To lighten liftoff, they threw out the life support backpacks, their moonboots, the empty camera, and some other equipment.
1:11 AM - They closed the hatch, pressurized the LM, and tried to sleep. After 7 hours of rest, at about 8AM, Mission Control in Houston woke the astronauts to get ready to return home. It took
about 2-1/2 hours to get ready. Somewhere in my account or Wikipedia’s, my time is off. It should have been about 10:30 AM.
Also, sometime during that 7 hours, Buzz accidentally bumped and damaged a circuit breaker to the main engine, the one that’d lift them off the moon. Everyone was terrified, but sticking a felt-tip pen in the circuit saved the day.
1:54 PM - The Eagle lifted off, the silver ascent stage only. They left the red descent stage on the
moon. As they left, Buzz caught sight of it being whipped around by their exhaust – then – the flag toppled over.
Next up: the return home.
BTW – this is a famous picture from that 1st moon landing. It is the only picture where you can send both astronauts. Neil took the picture of Buzz in the spacesuit , and Neil is reflected in Buzz’s helmet.
Timeline: Time to return home to Earth
July 20th – 21st - When Eagle left, Michael Collins was alone making solo orbits around the moon. He wasn’t lonely, even though he was out of radio contact every time he passed the far side of the moon. Michael was busy with housekeeping jobs that would get everyone home.
His first was to find Eagle. Michael knew it was about 4 miles off target, but he never found it. He also did maintenance jobs, like dumping extra water the fuel cells made and preparing the cabin for Eagle’s return.
On his third orbit around the Moon, Mission Control warned Michael about the coolant temperature. If it got too cold, parts of Columbia would freeze. They wanted him to switch to manual control and implement procedure 17, but Michael switched to manual and back to automatic again.
Michael did chores and kept an eye on the temperature. By the end of the next orbit, the problem resolved itself. While Neil and Buzz moon-walked, Michael relaxed.
Then he slept. He needed to be ready to rendezvous with Eagle, but he was ready to fly down to get them, just in case.
July 21st - 5:24 PM Eagle and Columbia met each other, and by 5:35 they reconnected. No problems!
7:41 PM Eagle’s silver ascent stage, was jettisoned off to orbit the moon. Eventually its orbit decayed, and it fell to earth. No sorry, to the moon!
July 23rd – the astronauts made one last TV broadcast. Michael thanked the people who built and tested the Saturn 5 rocket. It was an incredibly complicated piece of machinery, and it worked as expected.
Buzz commented that there were more than 3 men on their spaceship. Government and industry helped it fly. Then he read from Psalms to acknowledge God’s role. “When I consider the heavens, the work of Thy fingers, the Moon and the stars which Thou hast ordained; What is man that Thou art mindful of him?”
Neil thanked the American people and government for believing that man could go to the moon. He thanked those who put their hearts, and their talents into the
Saturn rocket. He finished with, “To all the people that are listening and watching tonight, God bless you. Good night from Apollo 11.”
The astronauts were due to splash down on the 24th, but there were a couple problems to solve first. A bearing at the Guam tracking station failed. It would have stopped communication for the last part of the trip. It couldn’t be repaired in time so station
director Charles Force had his 10-year-old son Greg reach inside the housing and pack it full of grease. It worked! Neil sent Greg a thank you.
The next problem, Air Force Captain Hank Brandli had access to top secret spy satellites. They showed a storm front headed to the recovery area. It would make it hard to see Columbia, and winds would shred its parachutes. Two Navy commanders believed him. They put
their careers at risk and convinced NASA to move the recovery area 215 nautical miles to the northeast.
Changing the recovery area also changed Columbia’s flight plan and the sequence of its computer program. The Navy had the Hornet in position.
July 24th – Before dawn the Hornet launched 4 helicopters and 3 tracer planes.
12:44 PM – The helicopters spotted Columbia’s parachutes.
12: 52 PM - Columbia splashed down 1440 nautical miles east of Wake Island. It landed upside down. Navy divers attached flotation collars and a sea anchor. It took 10 minutes to right the capsule. Rafts were launched to get the astronauts.
The divers gave the astronauts biological isolation garments. They rubbed the astronauts down with a bleach solution. After the astronauts and divers were aboard the helicopters, the raft was sunk, on purpose. NASA was worried about moon
germs. They even wiped Columbia down with a disinfectant.
1:53 PM - The helicopter took the astronauts to the Hornet’s hangar bay where they walked into the Mobile Quarantine Facility. That’s where they finished the 21 days of quarantine that began when Eagle and Columbia reconnected in space.
President Nixon was already aboard the Hornet, ready to welcome the astronauts back. He thanked them, “As a result of what you’ve done, the world has never been closer.”
After the president left, Hornet used a crane to lift the 5-ton Columbia space capsule aboard. Then they moved it down beside the astronauts’ quarantine unit.
The Hornet sailed onto Pearl Harbor, Hawaii where the astronauts and their quarantine unit were loaded aboard a cargo plane and flown to Houston.
July 28th - 6AM The astronauts arrived at Houston’s Lunar Receiving Laboratory for their final days of quarantine.
July 30th – Columbia was flown to the Lunar Receiving Lab in Houston after it finished its checkup on Ford Island and Hickham Air Force Base in Hawaii.
August 10th - The Interagency Committee met in Atlanta and lifted the quarantine on the 3 astronauts, their physician, engineer and on Columbia itself.
Timeline: Time to Celebrate!
August 13 – This is the ticker-tape parade in New York for Neil, Buzz, and Michael. There was another one in Chicago that day. About six million people attended the two parades.
That night President Nixon held a state dinner in Los Angeles to celebrate Apollo 11. Members of Congress were there, 44 governors, the Chief Justice of the Supreme Court, the Vice President, and ambassadors from 83 nations. It must have been dazzling to the astronauts who’d just come out of quarantine.
President Nixon and Vice President Agnew presented each astronaut with the Presidential Medal of Freedom. It’s the picture to the left.
September 6 – Neil came home to Wapak for a parade. I was there! I was 10. I don’t remember the heat, or Neil. Sorry! I remember Bob Hope came, Tricia Nixon Cox (the president’s daughter), the Purdue marching band, and best of all, Purdue’s Golden Girl (she twirled a baton). So did I!
Neil did a speech for kids at the football field, but I don’t think we went. It’s sad – I’m 60, and I see the opportunities I missed. I can’t go back in time and watch, BUT I can write about it for you. Here’s the link for the Wapak parade: https://www.cnbctv18.com/photos/buzz/hometown-of-neil-armstrong-ready-to-celebrate-50th-anniversary-of-moon-landing-3955881-13.htm
September 16 – The astronauts went to Congress. They presented a flag to the House of Representatives, and one to the Senate. Both had been on the Moon.
That was the beginning of a 38-day world tour that took the astronauts to 22 foreign countries. Leaders from many of those countries met the astronauts. Many honored them with medals. Some of Neil’s are in the Armstrong Air and Space Museum in Wapakoneta, Ohio. You can see them in the museum’s display case.
September 29th to November 5th – That’s how long the world tour lasted. I can’t imagine the sacrifice the astronauts and their families made. Sometime in July, pre-launch, they gave up their private lives to travel to the moon. They didn’t get them back till early November. That’s a huge price to pay! Maybe that’s why all 3 astronauts left NASA pretty quickly after the tour was over.
In 1970 Michael retired from NASA. He took a job at the Department of State as an Assistant Secretary of State for Public Affairs.
In 1971 Buzz left to become Commandant of the U.S. Air Force Test Pilot School.
In 1971 Neil resigned from NASA and accepted a teaching position at the University of Cincinnati. The reason . . . their aerospace engineering department.
This month was the 50th anniversary of the Apollo Moon landing. The astronauts all moved onto other jobs. Neil died on August 25, 2012. If you see someone wink at the moon in Wapak, you know they’re doing it to honor Neil. He’s still a big deal!
Michael and Buzz are still alive. I saw them on the news with President Trump and Melania honoring this big anniversary. I loved Buzz’s comment. He said something like, it’s a shame we haven’t been back to the moon. I agree.
Here’s to the next space adventure! Have you heard of Artemis? She’s Apollo’s twin sister and the name of NASA’s future missions, first back to the moon and onto Mars.
Late 2019 -- First commercial deliveries/landers to the moon
And that’s how I want to end my posts about the 50th anniversary, with hope for the future. The kids who will be building Orion or riding aboard Artemis missions to the moon, and then onto Mars, they sat in America’s classrooms over the last 10 years. Maybe one of them was a student of mine. I hope so!
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When I write, I can only have one voice in my head, mine. A little noise is fine. But too much, or worse yet, WORDS, and I must change rooms or pull out headphones. Then I can write on!