BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//hacksw/handcal//NONSGML v1.0//EN
BEGIN:VEVENT
UID:trzeci-piatek.zacheta
DTSTAMP:20260716T044117Z
DTSTART:20260716T044117Z
SUMMARY:Trzeci piątek
END:VEVENT
END:VCALENDAR