Timeline
Events
Some of the events listed here are merely debated to be the work of the Zodiac Killer. Only event entries marked with an asterisk (*) are officially confirmed by police to be the work of the Zodiac. Mail Event locations and dates are based on postmark stamps.
| Date | Event | Location |
|---|---|---|
| 1963-06-04, Tuesday | Murder - Robert Domingos, Linda Edwards | Santa Barbara, CA |
| 1966-10-30, Sunday | Murder - Cheri Jo Bates | Riverside, CA |
| 1966-11-29, Tuesday | Mail - Riverside PD and Press, Confession | Riverside, CA |
| 1966-12-00 | Desktop poem | Riverside, CA |
| 1967-04-30, Sunday | Mail - “Bates had to die” letter | Riverside, CA |
| 1968-12-20, Friday* | Murder - David Faraday, Betty Lou Jensen | Vallejo, CA |
| 1969-07-05, Saturday* | Murder - Darlene Ferrin, Mike Mageau | Vallejo, CA |
| 1969-07-31, Thursday* | Mail - z403 Cipher, ran 08-02, solved 08-08 | San Francisco, CA |
| 1969-08-04, Monday* | Mail - Debut of “Zodiac speaking” letter | San Francisco, CA |
| 1969-09-27, Saturday* | Murder - Cecelia Shepard, Bryan Hartnell | Napa, CA |
| 1969-10-11, Saturday* | Murder - Paul Stine, cab driver | San Francisco, CA |
| 1969-10-13, Monday* | Mail - Paul Stine piece-of-shirt letter | San Francisco, CA |
| 1969-10-22, Wednesday | Call - To SFPD requesting Melvin Belli | San Francisco, CA |
| 1969-11-08, Saturday* | Mail - z340 Cipher, dripping pen, ran 11-12 | San Francisco, CA |
| 1969-11-09, Sunday* | Mail - Bus bomb letter, “killed 7” | San Francisco, CA |
| 1969-12-20, Saturday* | Mail - Melvin Belli letter, “take my ninth” | San Francisco, CA |
| 1970-01-25, Sunday | Murder - Charles Jarman, cab driver | San Francisco, CA |
| 1970-03-22, Sunday | Assault - Kathleen Johns | Patterson, CA |
| 1970-04-20, Monday* | Mail - z13 Cipher, “My name is”, “killed ten” | San Francisco, CA |
| 1970-04-28, Tuesday* | Mail - Dragon card | San Francisco, CA |
| 1970-06-26, Friday* | Mail - z32 Cipher, Map, button letter, “Z-12” | San Francisco, CA |
| 1970-07-24, Friday | Mail - Kathleen Johns letter, “burning car” | San Francisco, CA |
| 1970-07-26, Sunday | Mail - “Little list” letter, “Z=13” | San Francisco, CA |
| 1970-09-06, Saturday | Murder - Donna Lass | S Lake Tahoe, CA |
| 1970-10-12, Monday | Mail - 13 Hole card, “Mon. Oct 5”, “13” | San Francisco, CA |
| 1970-10-26, Monday | Mail - Halloween Card, “4-teen” | San Francisco, CA |
| 1971-03-13, Saturday | Mail - LA Times letter, “Riverside”, “Z=17+” | Pleasanton, CA |
| 1971-03-22, Monday | Mail - Sierra Club Tahoe card, “victim 12” | No Postmark |
| 1974-01-29, Tuesday* | Mail - “The Exorcist” letter, Mikado, “Me-37” | San Francisco, CA |
| 1974-02-14, Thursday | Mail - “SLAy” letter, “a friend” | Unknown |
| 1974-05-08, Wednesday | Mail - Citizen card, “Badlands”, “A Citizen” | Alameda County, CA |
| 1974-07-08, Monday | Mail - “Red Phantom” letter, “Count Marco” | San Rafael, CA |
| 1978-04-26, Wednesday | Mail - “I am here” letter | San Francisco, CA |
| 1990-12-00 | Mail - Secret Pal xeroxed keys xmas card | unknown |
Sources: zodiackiller.com, zodiacciphers.com, wikipedia.com, projects.sfchronicle.com/2018/zodiac-timeline
Witness Accounts
Compilation of Eyewitness Descriptions - This is a nice spreadsheet by Chaucer
