BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Make a Calendar//Week Number//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
UID:mac-week-1971-W4@make-a-calendar.com
DTSTAMP:20260920T154147Z
DTSTART;VALUE=DATE:19710125
DTEND;VALUE=DATE:19710201
SUMMARY:ISO Week 4, 1971
DESCRIPTION:Monday–Sunday · 1971-W04 · Jan 25 – Jan 31, 1971
URL:https://make-a-calendar.com/week-number/1971/4
END:VEVENT
END:VCALENDAR