| Years |
Age |
Events |
| 1921 |
0 |
Born on July 18 in Cambridge, Ohio. |
| 1939 |
18 |
Graduates from New Concords High School. |
| 1942 |
21 |
Enlists in the US Army Air Forces. |
| 1943 |
22 |
Completes flight training, becomes a fighter pilot; marries Annie Castor on April 6. |
| 1944-1945 |
23 |
Serves in World War II, flying 59 combat missions in Europe. |
| 1945 |
24 |
Returns to the US; son David John Glenn born on August 13. |
| 1946 |
25 |
Joins the US Marine Corps. |
| 1947 |
26 |
Daughter Carolyn Ann Glenn born on October 29. |
| 1953 |
32 |
Becomes a test pilot at Cherry Point, North Carolina. |
| 1954 |
33 |
Awarded the Distinguished Flying Cross for his actions in Korea. |
| 1957 |
36 |
Sets a transcontinental speed record. |
| 1959 |
38 |
Selected as one of the Mercury Seven astronauts. |
| 1961 |
40 |
Serves as backup pilot for Alan Shepard’s Freedom 7 mission. |
| 1962 |
41 |
First American to orbit the Earth on February 20 with the Friendship 7 mission. |
| 1964 |
43 |
Resigns from NASA to run for the Senate but loses the Democratic primary to Stephen M. Young. |
| 1964-1970 |
44 |
Works as a businessman and lecturer. |
| 1970 |
49 |
Runs for the Senate again, loses the general election to Republican Robert Taft Jr. |
| 1974 |
53 |
Runs for the Senate, wins, and serves from 1975 to 1999. |
| 1984 |
63 |
Runs for the Democratic presidential nomination but withdraws after poor showings. |
| 1998 |
77 |
Flies on the Space Shuttle Discovery (STS-95) from October 29 to November 7. |
| 1999 |
78 |
Retires from the Senate. |
| 2012 |
91 |
Awarded the Presidential Medal of Freedom. |
| 2016 |
95 |
Dies on December 8 in Columbus, Ohio. |