BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Make a Calendar//Week Number//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
UID:mac-week-1978-W4@make-a-calendar.com
DTSTAMP:20260920T181242Z
DTSTART;VALUE=DATE:19780123
DTEND;VALUE=DATE:19780130
SUMMARY:ISO Week 4, 1978
DESCRIPTION:Monday–Sunday · 1978-W04 · Jan 23 – Jan 29, 1978
URL:https://make-a-calendar.com/week-number/1978/4
END:VEVENT
END:VCALENDAR