BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Make a Calendar//Week Number//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
UID:mac-week-1971-W20@make-a-calendar.com
DTSTAMP:20260920T154317Z
DTSTART;VALUE=DATE:19710517
DTEND;VALUE=DATE:19710524
SUMMARY:ISO Week 20, 1971
DESCRIPTION:Monday–Sunday · 1971-W20 · May 17 – May 23, 1971
URL:https://make-a-calendar.com/week-number/1971/20
END:VEVENT
END:VCALENDAR