BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Make a Calendar//Week Number//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
UID:mac-week-1973-W21@make-a-calendar.com
DTSTAMP:20260920T154233Z
DTSTART;VALUE=DATE:19730521
DTEND;VALUE=DATE:19730528
SUMMARY:ISO Week 21, 1973
DESCRIPTION:Monday–Sunday · 1973-W21 · May 21 – May 27, 1973
URL:https://make-a-calendar.com/week-number/1973/21
END:VEVENT
END:VCALENDAR