NASA has invited Buzz Aldrin and Michael Collins to Kennedy Space Center’s Launch Complex 39A.

They will mark the precise moment today, July 16, 1969 —at 9:32 a.m.  — that their rocket departed on humanity’s first moon landing with mission commander Neil Armstrong.

It will kick start eight days of anniversary celebrations for each day of Apollo 11’s voyage.

Also Tuesday morning, 5,000 model rockets are set to launch simultaneously at the U.S. Space and Rocket Center in Huntsville, Alabama. At the National Air and Space Museum in Washington, Armstrong’s newly restored spacesuit goes on display.