Damn, I'm an old fart...
You said your birthday is 12 / 7 / 20
which means you are 1985 years old and about:
1895 years 11 months older than Walter Cronkite, age 89
1900 years 7 months older than Nancy Reagan, age 84
1903 years 6 months older than George Herbert Bush, age 81
1910 years 10 months older than Barbara Walters, age 74
1912 years 11 months older than Larry King, age 72
1919 years 2 months older than Ted Koppel, age 66
1922 years 7 months older than Geraldo Rivera, age 62
1925 years 7 months older than George W. Bush, age 59
1930 years 7 months older than Jesse Ventura, age 54
1934 years 11 months older than Bill Gates, age 50
1939 years 9 months older than Cal Ripken Jr., age 45
1945 years 7 months older than Mike Tyson, age 39
1949 years 8 months older than Jennifer Lopez, age 35
1955 years 1 month older than Tiger Woods, age 30
1961 years 6 months older than Prince William, age 23
and that you were:
1980 years old at the time of the 9-11 attack on America
1979 years old on the first day of Y2K
1976 years old when Princess Diana was killed in a car crash
1974 years old at the time of Oklahoma City bombing
1973 years old when O. J. Simpson was charged with murder
1972 years old at the time of the 93 bombing of the World Trade Center
1970 years old when Operation Desert Storm began
1968 years old during the fall of the Berlin Wall
1965 years old when the space shuttle Challenger exploded
1963 years old when Apple introduced the Macintosh
1962 years old during Sally Ride's travel in space
1960 years old when Pres. Reagan was shot by John Hinckley, Jr.
1958 years old at the time the Iran hostage crisis began
1955 years old on the U.S.'s bicentennial Fourth of July
1953 years old when President Nixon left office
1951 years old when Alabama Gov. George C. Wallace was shot
1948 years old at the time the first man stepped on the moon
1947 years old when Martin Luther King Jr was assassinated
1944 years old during the Watts riot
1942 years old at the time President Kennedy was assassinated
1938 years old when Hawaii was admitted as 50th of the United States
1936 years old when the Soviet satellite Sputnik 1 was launched
1932 years old at the end of the Korean War
1924 years old when the atomic bomb was dropped on Hiroshima
1921 years old at the time of the Japanese attack on Pearl Harbor
1914 years old in the year radar was invented
1908 years old when the American stock market crashed
1906 years old in the year of the first talking motion picture
1894 years old at the time of the sinking of the Lusitania
1893 years old when the First World War began
1891 years old at the time of the maiden voyage of the Titanic
1885 years old during the great San Francisco earthquake