I tried to put two events together in one ICS. To do this I helped an example put on this forum:
(...)
BEGIN:VCALENDAR
PRODID:-//bobbin v0.1//NONSGML iCal Writer//EN
VERSION:2.0
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTART:20100701T080000Z
DTEND:20100701T110000Z
DTSTAMP:20091130T213238Z
UID:1285935469767a7c7c1a9b3f0df8003a@yoursever.com
CREATED:20091130T213238Z
DESCRIPTION:Example event 1
LAST-MODIFIED:20091130T213238Z
SEQUENCE:0
STATUS:CONFIRMED
SUMMARY:Example event 1
TRANSP:OPAQUE
END:VEVENT
BEGIN:VEVENT
DTSTART:20100701T120000Z
DTEND:20100701T130000Z
DTSTAMP:20091130T213238Z
UID:1285935469767a7c7c1a9b3f0df8003b@yoursever.com
CREATED:20091130T213238Z
DESCRIPTION:Example event 2
LAST-MODIFIED:20091130T213238Z
SEQUENCE:0
STATUS:CONFIRMED
SUMMARY:Example event 2
TRANSP:OPAQUE
END:VEVENT
END:VCALENDAR
(...)
The result was that the invitation noticed inside the calendar only first event, the second was omitted.
What was wrong?
I observed the same result in Outlook and Gmail.