Season 0 of National Geographic Specials premiered on null.

Season 1 of National Geographic Specials premiered on 1965-09-10.

Season 2 of National Geographic Specials premiered on 2002-05-01.

Season 3 of National Geographic Specials premiered on 1967-01-30.

Season 4 of National Geographic Specials premiered on 1968-02-20.

Season 5 of National Geographic Specials premiered on 1969-02-18.

Season 6 of National Geographic Specials premiered on 1970-02-10.

Season 7 of National Geographic Specials premiered on 1971-02-13.

Season 8 of National Geographic Specials premiered on 1972-01-12.

Season 9 of National Geographic Specials premiered on 1973-01-17.

Season 10 of National Geographic Specials premiered on 1974-01-10.

Season 11 of National Geographic Specials premiered on 1975-10-28.

Season 12 of National Geographic Specials premiered on 1976-01-13.

Season 13 of National Geographic Specials premiered on 1977-01-18.

Season 14 of National Geographic Specials premiered on 1978-01-09.

Season 15 of National Geographic Specials premiered on 1979-01-07.

Season 16 of National Geographic Specials premiered on 1980-01-08.

Season 17 of National Geographic Specials premiered on 1981-01-07.

Season 18 of National Geographic Specials premiered on 1982-01-13.

Season 19 of National Geographic Specials premiered on 1983-01-01.

Season 20 of National Geographic Specials premiered on 1984-01-01.

Season 21 of National Geographic Specials premiered on 1985-01-16.

Season 22 of National Geographic Specials premiered on 1986-01-03.

Season 23 of National Geographic Specials premiered on 1987-01-14.

Season 24 of National Geographic Specials premiered on 1988-01-20.

Season 25 of National Geographic Specials premiered on 1989-01-08.

Season 26 of National Geographic Specials premiered on 1990-01-10.

Season 27 of National Geographic Specials premiered on 1991-01-09.

Season 28 of National Geographic Specials premiered on 1992-01-22.

Season 29 of National Geographic Specials premiered on 1993-01-20.

Season 30 of National Geographic Specials premiered on 1994-01-12.

Season 31 of National Geographic Specials premiered on 1995-01-25.

Season 32 of National Geographic Specials premiered on 1996-01-17.

Season 33 of National Geographic Specials premiered on 1997-02-25.

Season 34 of National Geographic Specials premiered on 1998-01-24.

Season 35 of National Geographic Specials premiered on 1999-01-30.

Season 36 of National Geographic Specials premiered on null.

Season 37 of National Geographic Specials premiered on null.

Season 38 of National Geographic Specials premiered on null.

Season 39 of National Geographic Specials premiered on null.

Season 40 of National Geographic Specials premiered on null.

Season 41 of National Geographic Specials premiered on null.

Season 42 of National Geographic Specials premiered on null.

Season 43 of National Geographic Specials premiered on null.

Season 44 of National Geographic Specials premiered on null.

Season 45 of National Geographic Specials premiered on 2010-08-18.