Tickets :: Comment on [#15070] Timezone information of event is lost after sync. This causes problems with Android client.

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Comment	> I'm experiencing the problem that events have no timezone information > when exported or synchronized over CalDAV. This leads to the problem > that the calendar under Android shows wrong time if > the event should be moved. > > Exports of over CalDAV missing the TZ* attributes. Other CalDAV > implementations provide something like this for each event: > > TZOFFSETFROM:+0200 > TZOFFSETTO:+0100 > TZNAME:CET > > Setting a timezone to a new event in calendar web app has no > influence to the behaviour. > > Creating a new event on Android working properly. The event has the > correct timezone until the first sync is done. After the sync the > timezone information is lost also. > > After two days of experimenting I'm running out of ideas. > > On Andorid DAVx5 Version 3.3.10-ose is in use. Server side is Debian > Bullseye's version of horde is installed. The PHP version 7.4.15 is > used. A more detailed list with selected configs is attached. > > Special setup: User which is executing apache, php and horde has no > internet access. > > Timezone was set by user in > https://.../services/prefs.php?app=horde&group=language to > Europe/Berlin > > Timezone was set in /etc/php/7.4/apache2/php.ini:date.timezone = > Europe/Berlin > > It was verified with phpinfo() in the horde php shell, that PHP > version 7.4.15 is used and that the timezone is set to Europe/Berlin. > > In horde/kronolith/config/conf.php $conf[calendar][params][utc] was > tested with true and false, which leads to a movement of events > (expected) but no timezone infos in exports/sync. > > In horde/conf.php: $conf['timezone']['location'] = > 'file:///etc/horde/tzcode-latest.tar.gz'; > > It was tried to download the tzcode-latest.tar.gz to a local file > because the user executing php has no internet access. Restart of > apache. No effect. > > With horde/conf.php:$conf['timezone']['location'] = > 'ftp://ftp.iana.org/tz/tzdata-latest.tar.gz'; > > Internet access was allowed temporarily for ftp.iana.org with the > initial config. Restart of apache. No effect. > > Horde Tasks NAG app is installed and activated and can be opened > without errors in web front end. > > The solution mentioned in > http://horde.690.n7.nabble.com/timezone-problem-in-Calendar-Views-td124088.html is unclear to me. I did not found any > use_system_timezone.patch. > > Database creation was done with webmail-install provided by > php-horde-webmail debian package. > > Thanks for the nice groupware and for consideration! >
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