BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//hacksw/handcal//NONSGML v1.0//EN
BEGIN:VEVENT
UID:w-piatek-o-piatej-21.zacheta
DTSTAMP:20260706T232250Z
DTSTART:20260706T232250Z
SUMMARY:W piątek o piątej
END:VEVENT
END:VCALENDAR