Translation of "when" into Danish

Since when do you care what anyone thinks?

Siden hvornår bekymrer du dig om hvad nogen tænker?

You should stop peeking when people are using their cellphones.

Du bør holde op med kigge når folk bruger deres mobiltelefoner.

I preferred it when she used to just shout at me.

Jeg foretrak dengang hun bare plejede at råbe ad mig.

Tom stopped talking when he saw Mary enter the room.

Tom holdt op med at tale da han så Mary træde ind i rummet.