BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//time.you/holidays//NONSGML v1.0//EN
BEGIN:VEVENT
UID:3617b1a0-56a4-48c0-b3b4-e4f207b7a02d
DTSTAMP:20260509T034657Z
DTSTART;VALUE=DATE:20210614
SUMMARY:Day off (substituted from 06/12/2021) (Russia)
END:VEVENT
END:VCALENDAR