BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//time.now/holidays//NONSGML v1.0//EN
BEGIN:VEVENT
UID:e4befbce-9fae-469a-b3b4-e70a8d34c1bd
DTSTAMP:20260420T092651Z
DTSTART;VALUE=DATE:20210510
SUMMARY:Day off (substituted from 05/09/2021) (Rusia)
END:VEVENT
END:VCALENDAR