BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//kitap.tatar.ru
CALSCALE:GREGORIAN
BEGIN:VTIMEZONE
TZID:Europe/Moscow
TZURL:http://tzurl.org/zoneinfo-outlook/Europe/Moscow
BEGIN:STANDARD
TZOFFSETFROM:+0300
TZOFFSETTO:+0300
TZNAME:MSK
DTSTART:19700101T000000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
UID:4080
DTSTART;TZID="Europe/Moscow":20180420T140000
DTEND;TZID="Europe/Moscow":20180420T150000
SUMMARY:Event " This amazing planet Earth!". 
DESCRIPTION:Ecological hour 
LOCATION:Библиотека филиал №23
END:VEVENT
END:VCALENDAR