BEGIN:VCALENDAR
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PRODID:-//archive.cryptologicfoundation.org//NONSGML kigkonsult.se iCalcrea
 tor 2.30.10//
CALSCALE:GREGORIAN
METHOD:PUBLISH
UID:be9cb931-760f-40a3-a88a-7d55db001cc5
X-WR-CALDESC:1 March 1918: German ADFGVX cipher was first used. Invented by
  Colonel Fritz Nebel and introduced in March 1918\, the cipher was a fract
 ionating transposition cipher which combined a modified Polybius square wi
 th a single columnar transposition.
X-WR-RELCALID:715f7b5ed5cf644e2609b03c20e4bd88
X-WR-TIMEZONE:America/New_York
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TZID:America/New_York
BEGIN:STANDARD
TZNAME:EST
DTSTART:20291104T020000
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
RDATE:20301103T020000
END:STANDARD
BEGIN:DAYLIGHT
TZNAME:EDT
DTSTART:20290311T020000
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
RDATE:20300310T020000
RDATE:20310309T020000
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BEGIN:VEVENT
UID:5ced6295-5142-423b-b8ea-66634317905d
DTSTAMP:20260427T053548Z
DESCRIPTION:1 March 1918: German ADFGVX cipher was first used. Invented by 
 Colonel Fritz Nebel and introduced in March 1918\, the cipher was a fracti
 onating transposition cipher which combined a modified Polybius square wit
 h a single columnar transposition.
DTSTART;TZID=America/New_York:20300301T000000
DTEND;TZID=America/New_York:20300301T235900
LOCATION:
SUMMARY:1918: German ADFGVX cipher first used.
END:VEVENT
END:VCALENDAR