Change date format in calendar view

Hi,

is it possible to change the way the date is being displayed in the calendar view?

On my site with german language the date of an event looks like:

Sep 23 um 10:00

But it would be nice to see it like this:

23. Sep. um 10:00 Uhr

On the single events pages the date format is displayed correct except the “Uhr” suffix is missing.

Any suggestions?

Thanks!