Utter format date/time

Hi, i am using duckling.

Can I format the {time} in the domain.yml something like {time:‘dd.mm.yyyy’}?

Or do I need to use an action?

Can you point me to some example code (github repo, …) where formatting is done?

Not in the domain, but see here Duckling date (or time) only extraction for some ideas on extracting only date or time from a duckling entity in a custom action. Keep in mind the details on that post refer to older versions of rasa.