BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Make a Calendar//Week Number//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
UID:mac-week-1988-W21@make-a-calendar.com
DTSTAMP:20260920T155713Z
DTSTART;VALUE=DATE:19880523
DTEND;VALUE=DATE:19880530
SUMMARY:ISO Week 21, 1988
DESCRIPTION:Monday–Sunday · 1988-W21 · May 23 – May 29, 1988
URL:https://make-a-calendar.com/week-number/1988/21
END:VEVENT
END:VCALENDAR