Editing "Week(agenda)"

Is it possible to edit the viewing of “Week(agenda)”?
By activating this at the left side is shown e.g. “3pm” but in Germany it would be “15:00” and the WP side is for a German company.
So when you can say me how, please do!

http://ww.wp.xz.cn/extend/plugins/wp-fullcalendar/