BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Make a Calendar//Week Number//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
UID:mac-week-1977-W13@make-a-calendar.com
DTSTAMP:20260920T181418Z
DTSTART;VALUE=DATE:19770328
DTEND;VALUE=DATE:19770404
SUMMARY:ISO Week 13, 1977
DESCRIPTION:Monday–Sunday · 1977-W13 · Mar 28 – Apr 3, 1977
URL:https://make-a-calendar.com/week-number/1977/13
END:VEVENT
END:VCALENDAR