Error when trying to parse relative recurrence rule from ical file

Aspose.Email Product Family
1

Here is the code which is erroring out when trying to read ical file.

event = Appointment.load(filename)
folder.add_mapi_message_item(event.to_mapi_message())

Error:

RuntimeError: Proxy error(AsposeException): Start date 01/24/2024 00:30:00 not valid for this rule - Recur every  month on the  Thursday on the 4th set position(s) for a maximum of 13 occurrences.

The following is the file that I am trying to read. The date should match up to a thursday. Also, not sure where 24th is coming from because the date in the ics file is 25th.

BEGIN:VCALENDAR
VERSION:2.0
BEGIN:VTIMEZONE
TZID:India Standard Time
BEGIN:STANDARD
DTSTART:16010101T000000
TZOFFSETFROM:+0530
TZOFFSETTO:+0530
END:STANDARD
BEGIN:DAYLIGHT
DTSTART:16010101T000000
TZOFFSETFROM:+0530
TZOFFSETTO:+0530
END:DAYLIGHT
END:VTIMEZONE
BEGIN:VEVENT
RRULE:FREQ=MONTHLY;UNTIL=20250124T190000Z;INTERVAL=1;BYDAY=4TH
SUMMARY;LANGUAGE=en-US:TZ issue
DTSTART;TZID=India Standard Time:20240125T003000
DTEND;TZID=India Standard Time:20240125T010000
END:VEVENT
END:VCALENDAR

Just to be safe, I also tried to read version with UTC timestamps, although the dates don’t match up there. I understand the UTC version not working. My concern is the previous ics file with the proper timezone not working.

BEGIN:VCALENDAR
VERSION:2.0
BEGIN:VEVENT
DTSTART:20240124T190000Z
DTEND:20240124T193000Z
RRULE:FREQ=MONTHLY;INTERVAL=1;BYDAY=4TH;UNTIL=20250125T182959Z
SUMMARY:TZ issue
END:VEVENT
END:VCALENDAR

I see a few related issue, but none seem to exactly match up:

2

@meain
We have opened the following new ticket(s) in our internal issue tracking system and will deliver their fixes according to the terms mentioned in Free Support Policies.

Issue ID(s): EMAILNET-41260

You can obtain Paid Support Services if you need support on a priority basis, along with the direct access to our Paid Support management team.