Timeline of The Hitchhiker's Guide to the Galaxy versions

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 Medium Title
March 8 – April 12, 1978 Radio series Primary Phase: "Fit the First" to "Fit the Sixth"
December 24, 1978 Radio series Secondary Phase: "Fit the Seventh"
May 1–9, 1979 Stage show The Hitchhiker's Guide to the Galaxy
1979 Record The Hitchhiker's Guide to the Galaxy
July 1979 Stage show The Hitchhiker's Guide to the Galaxy
October 1979 Novel The Hitchhiker's Guide to the Galaxy
January 1, 1980 Novel The Restaurant at the End of the Universe
January 21–25, 1980 Radio series Secondary Phase: "Fit the Eighth" to "Fit the Twelfth"
January 21 – February 23, 1980 Stage show The Hitchhiker's Guide to the Galaxy
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 Novel Life, the Universe and Everything
October 1984 Computer game The Hitchhiker's Guide to the Galaxy
November 1984 Novel 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 Novel Mostly Harmless
May 11, 2001 Death of Douglas Adams
September 21 – October 26, 2004 Radio series Tertiary Phase: "Fit the Thirteenth" to "Fit the Eighteenth"
April 28, 2005 Film The Hitchhiker's Guide to the Galaxy
May 3–24, 2005 Radio series Quandary Phase: "Fit the Nineteenth" to "Fit the Twenty-Second"
May 31 – June 21, 2005 Radio series Quintessential Phase: "Fit the Twenty-Third" to "Fit the Twenty-Sixth"
October 12, 2009 Novel And Another Thing..., by Eoin Colfer
June 12 - July 21, 2012 Stage show The Hitchhiker's Guide to the Galaxy Radio Show Live