1978 - Receives the Congressional Space Medal of Honor
1986 - Vice-chairman to the Rogers Commission on the Space Shuttle Challenger accident.
March 19, 1993 - Inducted into the Astronaut Hall of Fame
July 20, 1994 - Joins 19 other astronauts and President Bill Clinton at a White House ceremony to commemorate the 25th anniversary of the Apollo 11 moon walk.
July 21, 2004 - Attends a White House ceremony with Buzz Aldrin and Michael Collins marking the 35th anniversary of Apollo 11.
September 2006 - Voice recognition software finds the missing "a" in Armstrong's famous moon-landing quote. The speech was corrected to say "That's one small step for a man, one giant leap for mankind,"
October 2007 - Armstrong and 14 other astronauts, all Purdue University graduates, attend the university's dedication ceremony and dinner of the Neil Armstrong Hall of Engineering.
March 2010 - Armstrong, along with astronauts Jim Lovell, Eugene Cernan and others, visit U.S. troops in Iraq and Afghanistan.
May 2010 - Testifies before congressional committees with Eugene Cernan, where they voice opposition to the president's plans for NASA and human spaceflight, and explain their views on why America should continue the space shuttle program.
November 16, 2011 - Receives the Congressional Gold Medal for Distinguished Astronauts along with Buzz Aldrin, Michael Collins and John Glenn.
August 2012 - Has heart surgery.
August 25, 2012 - Passes away at the age of 82 following complications from cardiovascular procedures.