Appointment times differ between iOS and WebUI

mailcow / mailcow-dockerized

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Appointment times differ between iOS and WebUI #675

Closed imp1sh closed 6 years ago

imp1sh commented 6 years ago

Hi,

I just migrated from 0.14 to mailcow-dockerized. I'm on 40506d30526886ee681a3b7257c0cccf33bcc37a. I set up my iPhone (iOS 10.3.3 14G60) with caldav which worked fine.

I look at a specific appointment. Example: WebUI: Saturday, October 21th 2017 1900 hours iOS: Saturday, October 21th 2017 1700 hours

So there is a time difference of 2 hours obviously. The appointment's correct time is 1700 hours btw.

mailcow.conf: TZ=Europe/Berlin

What did I do wrong?

Braintelligence commented 6 years ago

This is a wild guess but I think the timezone settings of your iPhone concerning the calendar are wrong. Does CalDAV specify the timezone within events?

imp1sh commented 6 years ago

I set the iPhone to fixed timezone: Berlin. Now it seems to be working but I still don't understand because it was the WebUI that displayed it wrong. I will close this though.

Braintelligence commented 6 years ago

This is strange, if you set the timezone in mailcow.conf and your browser doesn't override it, then the time should be displayed correctly. I have the same setting and everything's fine.

imp1sh commented 6 years ago

Well I figured out, that the issue was with importing: Here is an example appointment:

BEGIN:VEVENT
UID:1ef159cc10
DTSTAMP:20171006T092748Z
CREATED:20171006T092748Z
LAST-MODIFIED:20171006T092748Z
SUMMARY:Eat lots of ice cream
DTSTART;TZID=Europe/Berlin:20171009T190000
DTEND;TZID=Europe/Berlin:20171009T230000
LOCATION:
DESCRIPTION:
CATEGORIES:
END:VEVENT

The WebUI displays this event as 21:00 hours. Any clues? Newly created appointments are being processed correctly.

Braintelligence commented 6 years ago

Mine also contain this:

DTSTART;TZID=Europe/Berlin:20171025T133000
DTEND;TZID=Europe/Berlin:20171025T150000

But also this at the top portion:

BEGIN:VCALENDAR
PRODID:+//IDN bitfire.at//DAVdroid/1.9-gplay ical4j/2.x
VERSION:2.0
BEGIN:VTIMEZONE
TZID:Europe/Berlin
TZURL:http://tzurl.org/zoneinfo/Europe/Berlin
X-LIC-LOCATION:Europe/Berlin

imp1sh commented 6 years ago

VTIMEZONE wasn't in my file. I added it. Still having the same problems... I fear this is a SOGO specific error and should be reported there, right? Nothing mailcow can do about it I guess.

Braintelligence commented 6 years ago

If you imported this, maybe a SOGo restart after import may help?

imp1sh commented 6 years ago

My workaround was to import the ics files on the iPhone which worked just fine.