Timeline of The Hitchhiker's Guide to the Galaxy versions

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This timeline shows the dates (and order of release) of all of the various media relating to Douglas Adams' The Hitchhiker's Guide to the Galaxy series. Where multiple releases/broadcasts occurred, the first one is given.

Date Media Title
March 8 - April 12, 1978 Radio series Primary Phase
December 24, 1978 Radio series Fit the Seventh (Christmas Special)
May 1 - May 9, 1979 Play The Hitchhiker's Guide to the Galaxy
1979 Record The Hitchhiker's Guide to the Galaxy
October, 1979 Book The Hitchhiker's Guide to the Galaxy
January 21 - February 23, 1980 Play The Hitchhiker's Guide to the Galaxy
January 21 - January 25, 1980 Radio series Secondary Phase: Fit the Eighth to Fit the Twelfth
July, 1979 Play The Hitchhiker's Guide to the Galaxy
1980 Book The Restaurant at the End of the Universe
1980 Record The Hitchhiker's Guide to the Galaxy Part Two: The Restaurant at the End of the Universe
January 5 - February 9, 1981 TV series The Hitchhiker's Guide to the Galaxy
1982 Book Life, the Universe and Everything
October, 1984 Computer game The Hitchhiker's Guide to the Galaxy
November, 1984 Book So Long, and Thanks For All the Fish
1985 Radio scripts The Hitchhiker's Guide to the Galaxy: The Original Radio Scripts
1986 Short story Young Zaphod Plays it Safe
1992 Book Mostly Harmless
May 11, 2001 Death of Douglas Adams
September 21 - October 26, 2004 Radio series Tertiary Phase
April 28, 2005 Movie The Hitchhiker's Guide to the Galaxy
May 3 - May 24, 2005 Radio series Quandary Phase
May 31 - June 21, 2005 Radio series Quintessential Phase