Season
- Season 1 1975-09-04
- Season 2 1976-04-24
- Season 3 1977-12-24
- Season 4 1978-01-14
- Season 5 1979-01-24
- Season 6 1980-01-30
- Season 7 1981-03-24
- Season 8 1982-02-09
- Season 9 1983-06-28
- Season 10 1984-04-24
- Season 11 1985-09-28
- Season 12 1986-04-11
- Season 13 1987-11-13
- Season 14 1988-05-06
- Season 15 1989-09-16
- Season 16 1990-12-08
- Season 17 1991-06-09
- Season 18 1992-06-06
- Season 19 1993-06-05
- Season 20 1994-05-21
- Season 21 1995-05-20
- Season 22 1996-05-25
- Season 23 1997-05-24
- Season 24 1998-05-23
- Season 25 1999-12-28
- Season 26 2000-09-10
- Season 27 2001-05-19
- Season 28 2002-03-15
- Season 29 1970-01-01
- Season 30 1970-01-01
- Season 31 1970-01-01
- Season 32 1970-01-01
- Season 33 1970-01-01
- Season 34 1970-01-01
- Season 35 1970-01-01
- Season 36 1970-01-01
- Season 37 1970-01-01
- Season 38 1970-01-01
- Season 39 1970-01-01
- Season 40 1970-01-01
- Season 41 1970-01-01
- Season 42 1970-01-01
- Season 43 1970-01-01
- Season 44 1970-01-01
- Season 51 2025-03-30
Season 51 Episode
What? Where? When? - Season 4 Episode 1
8.30 90 minutes 
