1 June 1953 (+) is born in New York, United States.

24 December 1975 (x) attacks Michelle Forman and another unidentified girl with a knife in New York City, United States.

29 July 1976 (-) shot dead Donna Lauria in New York, United States.

4 October 1976 (x) presumably throws a Molotov cocktail into the house of his neighbour Sam Carr in Yonkers, United States.

23 October 1976 (x) shot in the head Carl Denaro in New York, United States.

27 November 1976 (x) 16-year-old Donna DeMasi and 18-year-old Joanne Lomino are shot by Berkowitz in New York, United States.

30 January 1977 (x) shot dead Christine Freund in New York, United States.

8 March 1977 (-) shot dead with a .22 Beretta Virginia Voskerichian in New York, United States.

10 April 1977 (x) mails a threatening letter to his neighbour Sam Carr to shut up his black Labrador Retriever dog Harvey in Yonkers, United States.

17 April 1977 (-) shot dead Valentina Suriani in New York, United States.

17 April 1977 (x) Police discover the “I am Son of Sam, I am the Monster - Beëlzebub”-letter by Berkowitz at the crime scene where he shot Valentina Suriani and Alexander Esau in New York, United States.

19 April 1977 (x) mails a second threatening letter to his neighbour Sam Carr to shut up his dog Harvey in Yonkers, United States.

27 April 1977 (x) shoots Harvey, the dog of his neighbour Sam Carr in Yonkers, United States.

26 June 1977 (x) shoots 17-year-old Judy Placido and 20-year-old Salvatore Lupo as they were sitting in their car in New York, United States.

1 August 1977 (-) shot in the head Stacy Moskowitz in New York, United States.

10 August 1977 (x) is arrested in Yonkers, United States.

12 June 1978 (x) is sentenced to 315 years imprisonment and sent to the Attica Correctional Facility in New York City, United States.

10 July 1979 (x) is attacked with a razor, almost cutting his throat, by an unidentified fellow-inmate in Attica, United States.