I basically need to change the date format to german date format all over the WordPress site and I succeed it by changing the date time settings from the WordPress admin panel.

> 
> **Settings » General** :
> 
> 
> **Date Format** - Custom : j. F Y
> 
> 
> eg : 5. July 2016
> 
> 
> 

However I need to change the month names to german as well.

> 
> eg : 5. Juli 2016
> 
> 
> 

How should I do that ?