15 February 1939 (+) is born in Estherville, United States.

7 December 1960 (x) burns down a bus garage with three schoolbuses inside in Pocahontas, United States.

9 October 1961 (x) is sentenced to 3 years imprisonment for arson in Anamosa, United States.

15 November 1971 (x) attacked Susie Heppeard in Anchorage, United States.

19 December 1971 (x) abducted and raped Barbara Fields in Anchorage, United States.

7 July 1973 (-) presumably abducted and killed Megan Emerick in Seward, United States.

5 July 1975 (-) abducted and killed Mary Thill in Seward, United States.

14 October 1979 (x) abducted and attacked Christie Hayes in Anchorage, United States.

28 June 1980 (-) presumably abducted and killed Roxanne Easlund in Anchorage, United States.

6 September 1980 (-) abducted and shot dead Lisa Futrell in Anchorage, United States.

17 November 1981 (-) abducted and shot dead Sherry Morrow in Anchorage, United States.

2 December 1981 (-) abducted and killed Andrea Altiery in Anchorage, United States.

25 April 1983 (-) abducted and shot dead Paula Golding in Anchorage, United States.

13 June 1983 (x) held captive, tortured, raped and sexually assaulted Cindy Paulson in Anchorage, United States.

27 October 1983 (x) is arrested in Anchorage, United States.

27 February 1984 (x) Start of the trial against Hansen in Anchorage, United States.

24 April 1984 (x) is taken on a flight to locate some of his victims’ bodies in Anchorage, United States.

26 April 1984 (-) found shot dead Teresa Watson in Kenai Peninsula, United States.

25 May 1984 (-) abducted and killed Sue Luna in Anchorage, United States.

3 January 1990 (x) his prison cell is searched and several aviation maps and escape routes are found in Juneau, United States.

21 August 2014 (-) dies of undisclosed lingering health conditions in Anchorage, United States.