u/Advertising-Ill

When I was doing Duolingo, I saw something wierd.

For mig - for me

Til min far - for my father

Why did 'for' change to 'til'? Duolingo hasn't given me much explanation, and I don't trust AI websites...

I've only done Duolingo for a few months now, so I probably won't understand full danish sentences. If you could, explain it as much as possible in English please :D