BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Make a Calendar//Week Number//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
UID:mac-week-1978-W1@make-a-calendar.com
DTSTAMP:20260920T181301Z
DTSTART;VALUE=DATE:19780102
DTEND;VALUE=DATE:19780109
SUMMARY:ISO Week 1, 1978
DESCRIPTION:Monday–Sunday · 1978-W01 · Jan 2 – Jan 8, 1978
URL:https://make-a-calendar.com/week-number/1978/1
END:VEVENT
END:VCALENDAR