BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Make a Calendar//Week Number//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
UID:mac-week-1980-W13@make-a-calendar.com
DTSTAMP:20260920T182007Z
DTSTART;VALUE=DATE:19800324
DTEND;VALUE=DATE:19800331
SUMMARY:ISO Week 13, 1980
DESCRIPTION:Monday–Sunday · 1980-W13 · Mar 24 – Mar 30, 1980
URL:https://make-a-calendar.com/week-number/1980/13
END:VEVENT
END:VCALENDAR