BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Make a Calendar//Week Number//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
UID:mac-week-1977-W15@make-a-calendar.com
DTSTAMP:20260920T182205Z
DTSTART;VALUE=DATE:19770411
DTEND;VALUE=DATE:19770418
SUMMARY:ISO Week 15, 1977
DESCRIPTION:Monday–Sunday · 1977-W15 · Apr 11 – Apr 17, 1977
URL:https://make-a-calendar.com/week-number/1977/15
END:VEVENT
END:VCALENDAR