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"On This Date in Cryptologic History" Calendar

Learn about a wide variety of historical events related to cryptology, computers, math, cybersecurity, Intelligence, and more.

December 2024

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S M T W T F S
Dec 1 2 3 4 5 6 7
1887: U.S. Navy began using "The U.S. Navy Secret Code"
1952: Pre-employment Polygraph at NSA.
Pearl Harbor Day
1932: Polish Cipher Bureau Success!
1950: ATLAS became operational.
8 9 10 11 12 13 14
1992: Premiere of William Gibson's "Agrippa"
1898: Official End of Spanish-American War
1941: Germany and Italy Declared War on the U.S.
1977: Filing for RSA Patent
1906: Birth of Grace Hopper - computer pioneer and U.S. Navy Rear Admiral
1815: Birth of Ms. Ada Lovelace, the world's first computer programmer
1958: First NSA Holiday Party.
15 16 17 18 19 20 21
1562: Death of Johannes Trithemius
1972: NSOC Inaugurated
1993: National Cryptologic Museum Opened to the Public
2013: Death of Dr. Lowell K. "Jim" Frazer
1801: Patterson's "Perfect Cipher" Letter sent to Thomas Jefferson
1881: First telephone ciphony device invented by James Harris Rodgers.
1988: Terrorist bombing of Pan Am flight over Scotland.
Anniversary of NCM Opening to Public
1946: Meredith Gardner broke into KGB message re: Manhattan Project.
20 Dec 1969: Anniversary of the Capture of North Vietnamese Notebooks
22 23 24 25 26 27 28
1961: SP4 James Davis - first American cryptologist killed in Vietnam.
1968: "Pueblo" crew released by North Korea.
1928: Friedman's Coded Holiday Gram
Holiday Season Memories - NSA Building Messages
1948: Stone Board report on centralizing U.S. cryptologic organizations was issued.
1951: Brownell Committee established - led to creation of NSA.
2001: Shoe-bomber Richard Reid arrested.
29 30 Dec 31 Jan 1 2 3 4
1921: William Friedman at Office of the Chief Signal Officer
Sunday, December 1, 2024
Friday, December 6, 2024
Saturday, December 7, 2024
Monday, December 9, 2024
Tuesday, December 10, 2024
Wednesday, December 11, 2024
Saturday, December 14, 2024
Sunday, December 15, 2024
Monday, December 16, 2024
Tuesday, December 17, 2024
Wednesday, December 18, 2024
Thursday, December 19, 2024
Friday, December 20, 2024
Saturday, December 21, 2024
Sunday, December 22, 2024
Monday, December 23, 2024
Tuesday, December 24, 2024
Wednesday, December 25, 2024
Friday, December 27, 2024
Saturday, December 28, 2024
Tuesday, December 31, 2024

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