BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//archive.cryptologicfoundation.org//NONSGML kigkonsult.se iCalcrea
 tor 2.30.10//
CALSCALE:GREGORIAN
METHOD:PUBLISH
UID:20c43a44-6522-4761-b7c1-6dab3f52873f
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:aef7137de17dca3417e2a5c3edb7845f
X-WR-TIMEZONE:America/New_York
BEGIN:VTIMEZONE
TZID:America/New_York
BEGIN:STANDARD
TZNAME:EST
DTSTART:20251102T020000
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
RDATE:20261101T020000
END:STANDARD
BEGIN:DAYLIGHT
TZNAME:EDT
DTSTART:20250309T020000
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
RDATE:20260308T020000
RDATE:20270314T020000
END:DAYLIGHT
END:VTIMEZONE
BEGIN:VEVENT
UID:05dee4ad-9387-4650-b68e-297533df0f85
DTSTAMP:20260608T093539Z
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:20260301T000000
DTEND;TZID=America/New_York:20260301T235900
LOCATION:
SUMMARY:1918: German ADFGVX cipher first used.
END:VEVENT
END:VCALENDAR
