BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//time.you/holidays//NONSGML v1.0//EN
BEGIN:VEVENT
UID:2a176ebf-5b83-4a53-a90e-d9c0bf4a53d5
DTSTAMP:20260610T104544Z
DTSTART;VALUE=DATE:20200511
SUMMARY:Day off (substituted from 05/09/2020) (Russia)
END:VEVENT
END:VCALENDAR