BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Make a Calendar//Week Number//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
UID:mac-week-1971-W51@make-a-calendar.com
DTSTAMP:20260920T154342Z
DTSTART;VALUE=DATE:19711220
DTEND;VALUE=DATE:19711227
SUMMARY:ISO Week 51, 1971
DESCRIPTION:Monday–Sunday · 1971-W51 · Dec 20 – Dec 26, 1971
URL:https://make-a-calendar.com/week-number/1971/51
END:VEVENT
END:VCALENDAR