BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//contestcal//Amateur Radio Contest Calendar//EN
CALSCALE:GREGORIAN
X-WR-CALNAME:Amateur Radio Contests (RSGB FT4 International Activity Day)
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: RSGB FT4 International Activity Day. Dates are computed from each spon
 sor's own published rules. Times are UTC instants\; events marked TENTATIV
 E have not been verified against the sponsor's page yet.
END:VCALENDAR