BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Make a Calendar//Week Number//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
UID:mac-week-1980-W40@make-a-calendar.com
DTSTAMP:20260920T182005Z
DTSTART;VALUE=DATE:19800929
DTEND;VALUE=DATE:19801006
SUMMARY:ISO Week 40, 1980
DESCRIPTION:Monday–Sunday · 1980-W40 · Sep 29 – Oct 5, 1980
URL:https://make-a-calendar.com/week-number/1980/40
END:VEVENT
END:VCALENDAR