BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Make a Calendar//Week Number//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
UID:mac-week-1973-W1@make-a-calendar.com
DTSTAMP:20260920T153831Z
DTSTART;VALUE=DATE:19730101
DTEND;VALUE=DATE:19730108
SUMMARY:ISO Week 1, 1973
DESCRIPTION:Monday–Sunday · 1973-W01 · Jan 1 – Jan 7, 1973
URL:https://make-a-calendar.com/week-number/1973/1
END:VEVENT
END:VCALENDAR