BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//time.you/holidays//NONSGML v1.0//EN
BEGIN:VEVENT
UID:e79db815-a6ed-471e-a8ef-ef55c2bbdb5b
DTSTAMP:20260513T165109Z
DTSTART;VALUE=DATE:20210503
SUMMARY:Day off (substituted from 05/01/2021) (Russia)
END:VEVENT
END:VCALENDAR