BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//time.now/holidays//NONSGML v1.0//EN
BEGIN:VEVENT
UID:9312cd19-5126-40dd-b632-87348dfeefad
DTSTAMP:20260420T135241Z
DTSTART;VALUE=DATE:20260501
SUMMARY:National Day (Polonia)
END:VEVENT
END:VCALENDAR