DATE-TIME values in iCAL export/download are always in UTC

Hi,

when exporting an event in the ICS/iCAL format, the DATE-TIME values which are stored in the local time-zone of the DB are exported as UTC.
The reason seems to be in event-o-matic.php around line 1440:

echo "TRANSP:TRANSPARENT\r\n"; // for availability.
	echo sprintf("DTSTART;VALUE=DATE-TIME:%s\r\n",date('Ymd\THis\Z',$start));
        echo sprintf("DTEND;VALUE=DATE-TIME:%s\r\n",date('Ymd\THis\Z',$end));
	echo "END:VEVENT\r\n";

The – manually entered – trailing \Z in the calls to date(...) indicate that the values are in UTC – which simply is not true normally.

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