{{- $time_zone := "Europe/Berlin" -}}
BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CCCB//Calendar//DE
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:CCCB Calendar
X-WR-TIMEZONE:{{ $time_zone }}
{{ range .Pages }}
{{ if and .Params.dtstart .Params.dtend }}
BEGIN:VEVENT
UID:{{ .File.BaseFileName }}@berlin.ccc.de
SUMMARY:{{ .Title }}
{{ with .Params.subtitle }}DESCRIPTION:{{ . }}{{ end }}
URL:https://berlin.ccc.de{{ .RelPermalink }}
{{ with .Params.dtstart }}DTSTART:{{ . }}{{ end }}
{{ with .Params.dtend }}DTEND:{{ . }}{{ end }}
{{ with .Params.rrule }}RRULE:{{ . }}{{ end }}
DTSTAMP:{{ now.Format "20060102T150405Z" }}
END:VEVENT
{{ end }}
{{ end }}
END:VCALENDAR