I have the same problem, but live in germany. It’s about regularly repeating events. I record the appointment on a server (posteo), it repeats e.g. every monday at 08:00 a.m. Until 25.10.2020 it was shown correct on my android device. But since changeover to wintertime (MEZ/CET), it is shown on my android as an appointment at 07:00 a.m.
Events created in KOrganizer an hour off in Android (probably VTIMEZONE & DST related)
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Fruux is the calendar hosting service in question. The process I’ve used to reproduce this is as follows:
- Create two new calendars in Fruux, “DAVdroid” and “KOrganizer”.
- Create an event in KOrganizer on 31st October (after DST will have ended, bringing the Europe/Dublin timezone from UTC+1 to UTC equivalent), for 3 to 4 PM; the event shows correctly in both KOrganizer and Fruux’s online calendar, but in Android shows as being from 2 to 3 PM.
- Create an event in Android with the same details (I use aCalendar+, however notice the same issue in Simple Calendar); the event shows correctly everywhere, including both KOrganizer and Fruux’s online calendar.
If trying to reproduce from another country/timezone the key point is to create an event across a daylight savings time switchover.
Here is the raw ICS version of the KOrganizer calendar:
BEGIN:VCALENDAR VERSION:2.0 CALSCALE:GREGORIAN PRODID:-//SabreDAV//SabreDAV 3.1.0-alpha2//EN X-WR-CALNAME:KOrganizer X-APPLE-CALENDAR-COLOR:#e6c800FF BEGIN:VTIMEZONE TZID:Europe/Dublin BEGIN:STANDARD TZNAME:IST TZOFFSETFROM:+0000 TZOFFSETTO:+0100 DTSTART:19820328T010000 RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3 END:STANDARD BEGIN:STANDARD TZNAME:IST TZOFFSETFROM:+0000 TZOFFSETTO:+0100 DTSTART:19720319T020000 RRULE:FREQ=YEARLY;UNTIL=19810329T010000;COUNT=9;BYDAY=3SU;BYMONTH=3 RDATE;VALUE=DATE-TIME:19800316T020000 END:STANDARD BEGIN:STANDARD TZNAME:GMT TZOFFSETFROM:+0100 TZOFFSETTO:+0000 DTSTART:19811025T020000 RRULE:FREQ=YEARLY;UNTIL=19891029T020000;COUNT=8;BYDAY=4SU;BYMONTH=10 END:STANDARD BEGIN:STANDARD TZNAME:GMT TZOFFSETFROM:+0100 TZOFFSETTO:+0000 DTSTART:19901028T020000 RRULE:FREQ=YEARLY;UNTIL=19991031T020000;COUNT=9;BYDAY=4SU;BYMONTH=10 END:STANDARD BEGIN:STANDARD TZNAME:GMT TZOFFSETFROM:+0100 TZOFFSETTO:+0000 DTSTART:20001029T020000 RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10 END:STANDARD BEGIN:STANDARD TZNAME:GMT TZOFFSETFROM:+0100 TZOFFSETTO:+0000 DTSTART:19721029T030000 RDATE;VALUE=DATE-TIME:19721029T030000 RDATE;VALUE=DATE-TIME:19731028T030000 RDATE;VALUE=DATE-TIME:19741027T030000 RDATE;VALUE=DATE-TIME:19751026T030000 RDATE;VALUE=DATE-TIME:19761024T030000 RDATE;VALUE=DATE-TIME:19771023T030000 RDATE;VALUE=DATE-TIME:19781029T030000 RDATE;VALUE=DATE-TIME:19791028T030000 RDATE;VALUE=DATE-TIME:19801026T030000 RDATE;VALUE=DATE-TIME:19881023T020000 RDATE;VALUE=DATE-TIME:19981025T020000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20181024T122432Z CREATED:20181024T122432Z UID:5198c47c-5bd2-47f7-bbc3-021eacb163d0 LAST-MODIFIED:20181024T122432Z SUMMARY:KOrganizer Test Event DTSTART;TZID=Europe/Dublin:20181031T150000 DTEND;TZID=Europe/Dublin:20181031T160000 TRANSP:OPAQUE END:VEVENT END:VCALENDARAnd here is the ICS version of the DAVdroid calendar:
BEGIN:VCALENDAR VERSION:2.0 CALSCALE:GREGORIAN PRODID:-//SabreDAV//SabreDAV 3.1.0-alpha2//EN X-WR-CALNAME:DAVdroid X-APPLE-CALENDAR-COLOR:#e6c800FF BEGIN:VTIMEZONE TZID:Europe/Dublin TZURL:http://tzurl.org/zoneinfo/Europe/Dublin X-LIC-LOCATION:Europe/Dublin BEGIN:DAYLIGHT TZOFFSETFROM:+0000 TZOFFSETTO:+0100 TZNAME:IST DTSTART:19810329T010000 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU END:DAYLIGHT BEGIN:DAYLIGHT TZOFFSETFROM:-002521 TZOFFSETTO:+003439 TZNAME:IST DTSTART:19160521T020000 RDATE:19160521T020000 END:DAYLIGHT BEGIN:DAYLIGHT TZOFFSETFROM:+0000 TZOFFSETTO:+0100 TZNAME:BST DTSTART:19170408T020000 RDATE:19170408T020000 RDATE:19180324T020000 RDATE:19190330T020000 RDATE:19200328T020000 RDATE:19210403T020000 END:DAYLIGHT BEGIN:DAYLIGHT TZOFFSETFROM:+0000 TZOFFSETTO:+0100 TZNAME:IST DTSTART:19220326T020000 RDATE:19220326T020000 RDATE:19230422T020000 RDATE:19240413T020000 RDATE:19250419T020000 RDATE:19260418T020000 RDATE:19270410T020000 RDATE:19280422T020000 RDATE:19290421T020000 RDATE:19300413T020000 RDATE:19310419T020000 RDATE:19320417T020000 RDATE:19330409T020000 RDATE:19340422T020000 RDATE:19350414T020000 RDATE:19360419T020000 RDATE:19370418T020000 RDATE:19380410T020000 RDATE:19390416T020000 RDATE:19400225T020000 RDATE:19470316T020000 RDATE:19480418T020000 RDATE:19490403T020000 RDATE:19500416T020000 RDATE:19510415T020000 RDATE:19520420T020000 RDATE:19530419T020000 RDATE:19540411T020000 RDATE:19550417T020000 RDATE:19560422T020000 RDATE:19570414T020000 RDATE:19580420T020000 RDATE:19590419T020000 RDATE:19600410T020000 RDATE:19610326T020000 RDATE:19620325T020000 RDATE:19630331T020000 RDATE:19640322T020000 RDATE:19650321T020000 RDATE:19660320T020000 RDATE:19670319T020000 RDATE:19680218T020000 RDATE:19720319T020000 RDATE:19730318T020000 RDATE:19740317T020000 RDATE:19750316T020000 RDATE:19760321T020000 RDATE:19770320T020000 RDATE:19780319T020000 RDATE:19790318T020000 RDATE:19800316T020000 END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:+0100 TZOFFSETTO:+0000 TZNAME:GMT DTSTART:19961027T020000 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU END:STANDARD BEGIN:STANDARD TZOFFSETFROM:-0025 TZOFFSETTO:-002521 TZNAME:DMT DTSTART:18800802T000000 RDATE:18800802T000000 END:STANDARD BEGIN:STANDARD TZOFFSETFROM:+003439 TZOFFSETTO:+0000 TZNAME:GMT DTSTART:19161001T030000 RDATE:19161001T030000 END:STANDARD BEGIN:STANDARD TZOFFSETFROM:+0100 TZOFFSETTO:+0000 TZNAME:GMT DTSTART:19170917T030000 RDATE:19170917T030000 RDATE:19180930T030000 RDATE:19190929T030000 RDATE:19201025T030000 RDATE:19211003T030000 RDATE:19221008T030000 RDATE:19230916T030000 RDATE:19240921T030000 RDATE:19251004T030000 RDATE:19261003T030000 RDATE:19271002T030000 RDATE:19281007T030000 RDATE:19291006T030000 RDATE:19301005T030000 RDATE:19311004T030000 RDATE:19321002T030000 RDATE:19331008T030000 RDATE:19341007T030000 RDATE:19351006T030000 RDATE:19361004T030000 RDATE:19371003T030000 RDATE:19381002T030000 RDATE:19391119T030000 RDATE:19461006T030000 RDATE:19471102T030000 RDATE:19481031T030000 RDATE:19491030T030000 RDATE:19501022T030000 RDATE:19511021T030000 RDATE:19521026T030000 RDATE:19531004T030000 RDATE:19541003T030000 RDATE:19551002T030000 RDATE:19561007T030000 RDATE:19571006T030000 RDATE:19581005T030000 RDATE:19591004T030000 RDATE:19601002T030000 RDATE:19611029T030000 RDATE:19621028T030000 RDATE:19631027T030000 RDATE:19641025T030000 RDATE:19651024T030000 RDATE:19661023T030000 RDATE:19671029T030000 RDATE:19711031T030000 RDATE:19721029T030000 RDATE:19731028T030000 RDATE:19741027T030000 RDATE:19751026T030000 RDATE:19761024T030000 RDATE:19771023T030000 RDATE:19781029T030000 RDATE:19791028T030000 RDATE:19801026T030000 RDATE:19811025T020000 RDATE:19821024T020000 RDATE:19831023T020000 RDATE:19841028T020000 RDATE:19851027T020000 RDATE:19861026T020000 RDATE:19871025T020000 RDATE:19881023T020000 RDATE:19891029T020000 RDATE:19901028T020000 RDATE:19911027T020000 RDATE:19921025T020000 RDATE:19931024T020000 RDATE:19941023T020000 RDATE:19951022T020000 END:STANDARD BEGIN:STANDARD TZOFFSETFROM:+0000 TZOFFSETTO:+0000 TZNAME:GMT DTSTART:19211206T000000 RDATE:19211206T000000 RDATE:19960101T000000 END:STANDARD BEGIN:STANDARD TZOFFSETFROM:+0100 TZOFFSETTO:+0100 TZNAME:IST DTSTART:19681026T230000 RDATE:19681026T230000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20181024T122609Z UID:3bd064c2-b586-4d1d-ae08-f2f2797b5f08 SUMMARY:DAVdroid Test Event DTSTART;TZID=Europe/Dublin:20181031T150000 DTEND;TZID=Europe/Dublin:20181031T160000 CLASS:PRIVATE STATUS:CONFIRMED END:VEVENT END:VCALENDARBoth are exactly as downloaded by Fruux except for the removal of the
X-FRUUX-URLfield from both events. The obvious difference is in the VTIMEZONE definition, but given Fruux also reads both correctly I’m unsure whether the issue lies in the libraries used by DAVdroid for parsing ICS or elsewhere?Any help appreciated.
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Hello,
Thanks for your verbose report. However, I can’t reproduce this problem with the current DAVdroid version, Android 9.0 (plain emulator image) and Google Calendar 5.7 as calendar app, which shows your KOrganizer event like this:
Please provide steps to reproduce your DAVdroid debug info (DAVdroid / Settings / Debug info) which contains your DAVdroid version and other important information; and verbose DAVdroid logs while it downloads the event as described in [READ BEFORE POSTING] What’s required to diagnose a problem.
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@rfc2822 apologies, I forgot to include version information. I’m running:
- DAVdroid 2.0.4-gplay
- KOrganizer 5.7.3
- Android 7.1.1
Although while checking that I’ve just realised that the Oreo 8.1 update has finally been released for my phone, so I’ll install that and check tonight too. I’ll also enable logging to an external file and get you that info in the process.
