BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//time.now/holidays//NONSGML v1.0//EN
BEGIN:VEVENT
UID:48ff5c1f-5d90-47f8-bfa1-29cf2844355f
DTSTAMP:20260420T074856Z
DTSTART;VALUE=DATE:20211231
SUMMARY:Day off (substituted from 01/03/2021) (Rusia)
END:VEVENT
END:VCALENDAR