From 12/14/1972 (Apollo 17 leaves Moon) to 10/8/1988 is 15 years, 9 months, 3 weeks, 3 days
1-59-33
http://www.imdb.com/title/tt0094559/
"Superboy" (1988)
TV-Series 1988-1992
Release Date: 8 October 1988 (USA)
Plot Outline: The adventures of the Man of Steel in his teenage years.
From 3/3/1959 to 4/24/1968 ("Lana Lang") is: 3340 days
3-3-4
http://www.imdb.com/name/nm0001307/
Stacy Haiduk
Date of Birth: 24 April 1968
"Superboy" .... Lana Lang (32 episodes, 1988-1992)
From 2/1/1928 to 4/14/1977 is 13 days, 590 months old
1-3-59
http://www.imdb.com/name/nm0926183/
Stuart Whitman
Date of Birth: 1 February 1928
"Superboy" .... Jonathan Kent (6 episodes, 1988-1992)
This is the final episode listed for the "Superboy" television series:
From 6/7/1976 to 5/15/1992 (Friday) is 15 years, 343 days
343 / 365 = 0.93 year
From 6/7/1976 to 5/15/1992 (Friday) is 15.93 years
1-59-3
From 5/15/1992 (Friday) to 5/17/1992 (Sunday) is 2 days
http://www.imdb.com/title/tt0713462/
"Superboy"
Rites of Passage: Part 2 (1992)
Original Air Date: 17 May 1992 (Season 4, Episode 22)