BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//wp-events-plugin.com//7.4.0.1//EN
TZID:Europe/Berlin
X-WR-TIMEZONE:Europe/Berlin
BEGIN:VEVENT
UID:1137@nerdkalender.de
DTSTART;TZID=Europe/Berlin;VALUE=DATE:20170517
DTEND;TZID=Europe/Berlin;VALUE=DATE:20170518
DTSTAMP:20160209T095350Z
URL:https://nerdkalender.de/events/weltfernmeldetag-2017-05-17/
SUMMARY:Weltfernmeldetag
DESCRIPTION:Das meint die Wikipedia dazu.
END:VEVENT
BEGIN:VTIMEZONE
TZID:Europe/Berlin
X-LIC-LOCATION:Europe/Berlin
BEGIN:DAYLIGHT
DTSTART:20170326T030000
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
END:DAYLIGHT
END:VTIMEZONE
END:VCALENDAR