BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//PYVOBJECT//NONSGML Version 1//EN
BEGIN:VTIMEZONE
TZID:Europe/Moscow
BEGIN:STANDARD
DTSTART:20001029T030000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10;UNTIL=20111029T230000Z
TZNAME:MSK
TZOFFSETFROM:+0400
TZOFFSETTO:+0300
END:STANDARD
BEGIN:STANDARD
DTSTART:20120101T000000
RRULE:FREQ=YEARLY;BYMONTH=1;UNTIL=20131231T200000Z
TZNAME:MSK
TZOFFSETFROM:+0400
TZOFFSETTO:+0400
END:STANDARD
BEGIN:STANDARD
DTSTART:20150101T000000
RRULE:FREQ=YEARLY;BYMONTH=1
TZNAME:MSK
TZOFFSETFROM:+0300
TZOFFSETTO:+0300
END:STANDARD
BEGIN:DAYLIGHT
DTSTART:20000326T020000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3;UNTIL=20100327T230000Z
TZNAME:MSD
TZOFFSETFROM:+0300
TZOFFSETTO:+0400
END:DAYLIGHT
END:VTIMEZONE
BEGIN:VEVENT
UID:20260509T174246Z - 53404@0528b4dc6c98
DTSTART;TZID=Europe/Moscow:20231219T120000
DTEND;TZID=Europe/Moscow:20231219T130000
CREATED:20260509T174246Z
DTSTAMP:20260509T174246Z
SUMMARY:NGFW как оно работает?
END:VEVENT
END:VCALENDAR