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"On This Date in History" Calendar

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

January 2020

This Month
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Month
Year
S M T W T F S
29 30 Dec 31 Jan 1 2 3 4
1599: Birth date of Antoine Rossignol
1980: NSA Office of Policy mandated use of term "Service Cryptologic Element."
1962: Marine cryptologists in Vietnam.
1957: MG Gordon Blake named Commander, AF Security Service
1921: William Friedman began 6 month contract with Army Signal Corps
1977: NARA assigned Record Group 457 to declassified NSA records.
1962: Lt Gen Gordon A. Blake, USAF, became DIRNSA.
1977: U.S. Army Intelligence and Security Command established.
5 6 7 8 9 10 11
1924: Laurance Safford named OIC, Navy Cryptographic Branch.
1838: Alfred Vail uses dots & dashes
1942: Jerzy Różycki, Polish Cipher Bureau mathematician, died.
1996: Louis Tordella, long-time D/DIRNSA died.
12 13 14 15 16 17 18
2003: First "History Today" article on NSA Daily Page.
1944: BRUSA Agreement
1977: 56-bit Data Encryption Standard published.
1898: Publication of a new War Department Telegraphic Code was authorized.
1917: Zimmermann Telegram was sent.
1859: Alfred Vail, co-inventor of the telegraph, died.
1978: Brig Gen Ardisana Died on this Date
1991: Operation DESERT STORM began.
1918: German spy Lothar Witzke was arrested carrying a coded message.
19 20 21 22 23 24 25
1944: 9th Infantry Division of the Australian Army captured Japanese cryptographic library.
1981: Iran released U.S. hostages.
1988: DIRNSA and OPSEC training.
1968: North Koreans captured USS Pueblo.
1918: Arthur Scherbius received patent for ENIGMA.
1987: Navy EA-3B recon aircraft crashed in the Mediterranean Sea.
1998: U.S. cryptologic pioneer Abraham Sinkov died.
1941: Eligible readers of "Magic" intercept are established.
1915: Battle Of Dogger Bank
26 27 28 29 30 Jan 31 Feb 1
1973: Paris Peace Accords signed.
1943: New Zealand corvettes disable Japanese submarine and seize codebooks.
1968: Tet offensive in Vietnam began.
1992: 'The Federal Register' published details for the Secure Hash Standard (SHA).
1975: Church Committee began investigation of U.S. Intelligence Community.
Wednesday, January 1, 2020
Thursday, January 2, 2020
Friday, January 3, 2020
Saturday, January 4, 2020
Sunday, January 5, 2020
Monday, January 6, 2020
Thursday, January 9, 2020
Friday, January 10, 2020
Monday, January 13, 2020
Tuesday, January 14, 2020
Wednesday, January 15, 2020
Thursday, January 16, 2020
Friday, January 17, 2020
Saturday, January 18, 2020
Sunday, January 19, 2020
Monday, January 20, 2020
Wednesday, January 22, 2020
Thursday, January 23, 2020
Friday, January 24, 2020
Saturday, January 25, 2020
Monday, January 27, 2020
Wednesday, January 29, 2020
Thursday, January 30, 2020
Friday, January 31, 2020

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