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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 2030

This Month

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Dec 1	2	3	4	5	6	7
1887: U.S. Navy began using "The U.S. Navy Secret Code"						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"	1815: Birth of Ms. Ada Lovelace, the world's first computer programmer	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					1958: First NSA Holiday Party.

15	16	17	18	19	20
1562: Death of Johannes Trithemius	1972: NSOC Inaugurated	OTD in 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.
					20 Dec 1969: Anniversary of the Capture of North Vietnamese Notebooks
					1946: Meredith Gardner broke into KGB message re: Manhattan Project.

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.