BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Make a Calendar//Week Number//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
UID:mac-week-1971-W1@make-a-calendar.com
DTSTAMP:20260920T154235Z
DTSTART;VALUE=DATE:19710104
DTEND;VALUE=DATE:19710111
SUMMARY:ISO Week 1, 1971
DESCRIPTION:Monday–Sunday · 1971-W01 · Jan 4 – Jan 10, 1971
URL:https://make-a-calendar.com/week-number/1971/1
END:VEVENT
END:VCALENDAR