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 tor 2.30.10//
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METHOD:PUBLISH
UID:9738e0a6-1d1d-4a59-b375-dbe5f8f0d45e
X-WR-CALDESC:27 September 1940: On this day in 1940\, PURPLE Analogue #1 st
 arted decrypting Japanese diplomatic communications. Frank B. Rowlett head
 ed the team at the Army Signals Intelligence Service that broke the code. 
 Genevieve Grotjan found the patterns required to wire the telephone switch
 ing units. Leo Rosen\, the engineer on the team who had discovered that te
 lephone switching devices were the answer for replicating the Japanese mac
 hine that he had never seen\, built the Analogue (pictured here) and succe
 ssfully tested it earlier this month.
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X-WR-TIMEZONE:America/New_York
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TZID:America/New_York
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TZNAME:EST
DTSTART:20251102T020000
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
RDATE:20261101T020000
RDATE:20271107T020000
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TZNAME:EDT
DTSTART:20260308T020000
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
RDATE:20270314T020000
RDATE:20280312T020000
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BEGIN:VEVENT
UID:39868b75-7e39-4484-a2ea-e7125acb4a81
DTSTAMP:20260424T125026Z
DESCRIPTION:27 September 1940: On this day in 1940\, PURPLE Analogue #1 sta
 rted decrypting Japanese diplomatic communications. Frank B. Rowlett heade
 d the team at the Army Signals Intelligence Service that broke the code. G
 enevieve Grotjan found the patterns required to wire the telephone switchi
 ng units. Leo Rosen\, the engineer on the team who had discovered that tel
 ephone switching devices were the answer for replicating the Japanese mach
 ine that he had never seen\, built the Analogue (pictured here) and succes
 sfully tested it earlier this month.
DTSTART;TZID=America/New_York:20260927T000000
DTEND;TZID=America/New_York:20260927T235900
LOCATION:
SUMMARY:1940: Purple Analog #1 Started Decryption
END:VEVENT
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