BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//time.you/holidays//NONSGML v1.0//EN
BEGIN:VEVENT
UID:dae09fe4-72cb-4098-b93d-7da95fbeccbb
DTSTAMP:20260513T165252Z
DTSTART;VALUE=DATE:20210510
SUMMARY:Day off (substituted from 05/09/2021) (Russia)
END:VEVENT
END:VCALENDAR