I've talked to Antti (the developer of this add-on) a few times and also used this add-on. I can really recommend it! It's mostly used to translate though. We've got a few customers translating their site and packages using this add-on, works like a charm!

I'm new to c5, just having it running on a BitNami stack on my mac. Everything is installed in english but to have the final website for sure there must be a translation to German. What I am looking for is how and where to set the date format von US to CH (dd. mon. yyyy). Even so the time should be set to the 24h format. Will this be set automatically if I choose a language add-on or is there a way I can set in in my englisch environment?

These are the most common constants you can use in your site.php to change the date format: define('DATE_APP_GENERIC_MDY', 'd.m.Y'); define('DATE_APP_GENERIC_MDYT_FULL', 'd.m.Y H:i:s'); define('DATE_APP_GENERIC_MDYT', 'd.m.Y H:i:s'); define('DATE_APP_DATE_PICKER', 'dd.mm.yy'); define('DATE_FORM_HELPER_FORMAT_HOUR', '24');