BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//contestcal//Amateur Radio Contest Calendar//EN
CALSCALE:GREGORIAN
X-WR-CALNAME:Amateur Radio Contests (World Wide Digi DX Contest)
X-WR-TIMEZONE:UTC
REFRESH-INTERVAL;VALUE=DURATION:PT12H
X-PUBLISHED-TTL:PT12H
X-WR-CALDESC:Rolling window: the last 30 days and the next 365 days. Filter
 ed: World Wide Digi DX Contest. Dates are computed from each sponsor's own
  published rules. Times are UTC instants\; events marked TENTATIVE have no
 t been verified against the sponsor's page yet.
BEGIN:VEVENT
UID:ww-digi-20270828T1200@contestcal
DTSTAMP:20261001T192410Z
DTSTART:20270828T120000Z
DTEND:20270829T115900Z
SUMMARY:World Wide Digi DX Contest
DESCRIPTION:Sponsor: WWROF / Slovenia Contest Club\nModes: FT8/FT4 (FT4\, F
 T8)\nBands: 160m\, 80m\, 40m\, 20m\, 15m\, 10m\nBand note: Six bands only:
  1.8\, 3.5\, 7\, 14\, 21 and 28 MHz.\nDuration: 23h 59m\nExchange: A four-
 character Maidenhead grid square.\nLogs due: 2027-08-31\nNote: THE RECURRE
 NCE IS THE SPONSOR'S OWN WORDS AND IT SURVIVES THE YEAR THAT TESTS IT. 'La
 st full weekend of August' and 'last Saturday of August' are different rul
 es\, and they diverge whenever 31 August is a Saturday -- the Sunday then 
 falls in September\, so that weekend is not full. 2024 was such a year. Th
 e sponsor's own 2024 rules PDF (ww-digi.com/rules/wwdigi24_eng.pdf) reads 
 '2024 World Wide Digi DX Contest Starts: Saturday August 24 12:00:00 UTC E
 nds: Sunday August 25 11:59:59 UTC' -- the 24th\, not the 31st. So the ful
 l-weekend reading is what WWROF actually runs\, and nth_full_weekend with 
 n = -1 is right.\n\nChecked against five dates the sponsor published itsel
 f: 24 Aug 2024\, 29 Aug 2026\, 28 Aug 2027\, 26 Aug 2028 and 25 Aug 2029. 
 All five are reproduced.\n\nTHE LOG DEADLINE CHANGED FOR 2026\, from five 
 days to 48 hours. The 2024 rules said 'WITHIN FIVE (5) DAYS'\; the current
  rules say 'WITHIN 48 HOURS'. log_deadline_days is 2 and this note exists 
 so a reader comparing against an older edition is not misled.\n\nALSO NEW 
 AND WORTH READING BEFORE ENTERING: autonomous operation is prohibited. 'A 
 human operator must initiate calling each QSO partner. Autonomous systems 
 or robots that emulate this action are prohibited.' That is a rule about u
 nattended FT8\, which is how a lot of stations run this mode.\nRules: http
 s://ww-digi.com/rules/
URL:https://ww-digi.com/rules/
CATEGORIES:FT8/FT4
STATUS:CONFIRMED
TRANSP:TRANSPARENT
END:VEVENT
END:VCALENDAR