BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Make a Calendar//Week Number//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
UID:mac-week-1971-W21@make-a-calendar.com
DTSTAMP:20260920T154317Z
DTSTART;VALUE=DATE:19710524
DTEND;VALUE=DATE:19710531
SUMMARY:ISO Week 21, 1971
DESCRIPTION:Monday–Sunday · 1971-W21 · May 24 – May 30, 1971
URL:https://make-a-calendar.com/week-number/1971/21
END:VEVENT
END:VCALENDAR