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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.

June 2027

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S M T W T F S
30 May 31 Jun 1 2 3 4 5
1944: Jargon Code Message Announced D-Day Invasion
1989: Chinese troops crushed protestors in Tianamen Square.
1944: U-505 Captured by U.S. Navy Task Group.
1969: USAF RC-135E "Rivet Amber" was lost over the Bering Sea.
1931: Herbert Yardley's "The American Black Chamber" was released.
1942: Battle of Midway began.
1918: BG Marlborough Churchill became Chief, MID.
1967: Six-day War began in Mideast.
6 7 8 9 10 11 12
1944: D-Day
1991: Joseph Mauborgne, code and cipher expert & WWI Army Signal Corps Officer died.
1999: NATO and Yugoslavia Signed Accord.
1917: U.S. Army MI-8 Established.
1941: Herbert O. Yardley hired by Canada's National Research Council.
1862: J.E.B. Stewart began his infamous ride around McClellan's Army of the Potomac
1954: Death of Alan Turing, famed mathematician and cryptologist
1967: USS Liberty attacked by Israeli forces.
13 14 15 16 17 18 19
Publication of Brownell Committee Report - laid foundation for NSA.
1942: Signal Intelligence Service took possession of Arlington Hall.
2014: ATF honors Elizebeth Friedman
1979: Presidents Carter and Brezhnev signed SALT II Treaty.
1963: US-USSR agreed to "hotline."
1934: Communications Act of 1934 signed by President Roosevelt
20 21 22 23 24 25 26
1843: Publication of first installments of "The Gold Bug" by Poe
1960: GRAB, first reconnaissance satellite, launched.
1955: ASA assumes duties from Signal Corps.
1918: "Potomac Code" was issued.
1950: North Korean invasion of South Korea.
1976: Diffie and Hellman presented public-key exchange idea.
1966: New NSA Headquarters building was dedicated.
1532: Hernan Cortes Letters - first known use of cryptography in New World.
27 28 29 Jun 30 Jul 1 2 3
1860: Albert J. Myer, developer of flag "wig-wag" code appointed Signal Officer.
2007: Commissioning of Coast Guard Cryptologic Group at NSA.
1942: Allies realized code was broken by Germans.
1971: Two Rock Ranch (WWII monitoring station) closed.
1968: USS Liberty was decommissioned.
1998: Frank Rowlett, cryptologic pioneer, died.
Tuesday, June 1, 2027
Thursday, June 3, 2027
Friday, June 4, 2027
Saturday, June 5, 2027
Sunday, June 6, 2027
Monday, June 7, 2027
Tuesday, June 8, 2027
Thursday, June 10, 2027
Friday, June 11, 2027
Saturday, June 12, 2027
Sunday, June 13, 2027
Monday, June 14, 2027
Thursday, June 17, 2027
Friday, June 18, 2027
Saturday, June 19, 2027
Monday, June 21, 2027
Tuesday, June 22, 2027
Wednesday, June 23, 2027
Thursday, June 24, 2027
Friday, June 25, 2027
Sunday, June 27, 2027
Monday, June 28, 2027
Tuesday, June 29, 2027
Wednesday, June 30, 2027

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