the documentation rightly points out that I can change the timezone in /etc/icinga/web/conf.d/translation.xml, but what are the valid values for timezone?
GMT (Greenwich Mean Time) is the default, EST (Eastern Standard Time) seems to work, but what I really want is EDT (Eastern Daylight Time), which is EST, but with daylight savings time awareness.
The original problem sources from the underlaying agavi framework in combination with php not exposing the system timezone by default anymore (details: http://trac.agavi.org/ticket/1008)
etc/conf.d/translation.xml was added to Icinga Web for those people not being capable of modifying their php.ini - once you set the correct timezone (i.e 'Europe/Berlin') agavi and Icinga Web will be satisfied again. http://php.net/manual/en/timezones.php Other than that, you may still play around with translation.xml and set values like 'GMT+6' or similar, but i would rather suggest fixing your php.ini anyways.
