I am wondering why ducks and bears in Dk have a life that is more active than normal people. Amazing. I want to be a duck.
So the bear checks his diary because he needs to "reserve an afternoon". Makes sense. But for what? Stealing people's picnic baskets?
I put "one afternoon" but got rejected. Surely it is equally ludicrous as "an afternoon"?
Can't eftermiddag mean dinner? And it would seem to make more sense in this case than afternoon?
You should prioritise a native speaker's opinion over anything I say, but AFAIK "dinner" is "aftensmaden" - that is, "the evening meal". Evening is "aften", midday is "middag", and "after" is (roughly) "efter"; thus, eftermiddag = after-noon = afternoon, but not dinner.