BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//hacksw/handcal//NONSGML v1.0//EN
BEGIN:VEVENT
UID:osieki-19631981.zacheta
DTSTAMP:20260627T013420Z
DTSTART:20260627T013420Z
SUMMARY:OSIEKI 1963–1981
END:VEVENT
END:VCALENDAR