friflaj - 2013-12-27

I've managed to find an instance of such an appointment in the logs:

BEGIN:VEVENT
SUMMARY:Overleg
DTSTART;TZID=W. Europe Standard Time:20111122T100000
DTEND;TZID=W. Europe Standard Time:20111122T112500
UID:040000008200E00074C5B7101A82E0080000000090DE56836CB3CC0100000000000000001
00000006DFF889B41902A4C9E97C81B1C6EB01D
RECURRENCE-ID;TZID=W. Europe Standard Time:20111124T000000
CLASS:PUBLIC
PRIORITY:5
DTSTAMP:20111005T131340Z
TRANSP:OPAQUE
STATUS:CONFIRMED
SEQUENCE:0
CATEGORIES:IMI
LOCATION:ntb
X-MICROSOFT-CDO-APPT-SEQUENCE:0
X-MICROSOFT-CDO-OWNERAPPTID:0
X-MICROSOFT-CDO-BUSYSTATUS:BUSY
X-MICROSOFT-CDO-INTENDEDSTATUS:BUSY
X-MICROSOFT-CDO-ALLDAYEVENT:FALSE
X-MICROSOFT-CDO-IMPORTANCE:1
X-MICROSOFT-CDO-INSTTYPE:1
X-MICROSOFT-DISALLOW-COUNTER:FALSE
ATTENDEE;CN="Heyns Emiliano";PARTSTAT=NEEDS-ACTION;ROLE=REQ-PARTICIPANT:mailt
o:Emiliano.Heyns@han.nl
END:VEVENT