[korganizer] [Bug 412025] New: Wrong timezone offset with TZID=Western/Central Europe

[Roland Tapken]

https://bugs.kde.org/show_bug.cgi?id=412025

            Bug ID: 412025
           Summary: Wrong timezone offset with TZID=Western/Central Europe
           Product: korganizer
           Version: 5.10.3
          Platform: Ubuntu Packages
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: timezones
          Assignee: kdepim-bugs at kde.org
          Reporter: kde at tmp.dau-sicher.de
  Target Milestone: ---

Created attachment 122706
  --> https://bugs.kde.org/attachment.cgi?id=122706&action=edit
Invitation from the web client

SUMMARY

Whenever I get an invitation from someone using IBM Notes' Webclient
Korganzizer calculates a wrong timezone offset. The attached invitation
c165914.ics get's imported with a start time of 13:00 CEST, while c165915.ics
(generated by Notes' desktop application) is correctly imported as 12:00 CEST.

I analyzed the differences between these file, and the only relevant difference
is the TZID. While "TZID:W. Europe Standard Time" (desktop application) is
handled correctly by Korganizer, "TZID:Western/Central Europe" (web client) is
imported with a +1 offset.

A assume that the real problem is that one of these TZIDs generated by Lotus
Notes is wrong, but I'm also sure that IBM will never fix this problem. So
maybe it can be work around in the clients.

STEPS TO REPRODUCE
1. Send an invitation with Notes Webclient
2. Import with Korganizer

OBSERVED RESULT

Come one hour late to the appointment (happened multiple times to me).

EXPECTED RESULT

Be in time.


SOFTWARE/OS VERSIONS
Linux/KDE Plasma
KDE Plasma Version: 18.12.3
KDE Frameworks Version: 5.56.1
Qt Version: 5.12.2

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