Breakdown of Hver notar handklæðið mitt í dag?
hver
who / what / which (one)
nota
to use
í dag
today
minn
my (m, f, n: minn, mín, mitt)
Questions & Answers about Hver notar handklæðið mitt í dag?
Why is "my" translated as mitt here instead of minn?
Mitt is the neuter, singular form of "my". Because it describes the neuter noun handklæðið (the towel), it has to match its gender. The towel is the object being used, which puts it in the accusative case. For neuter words, the accusative form of "my" is mitt (which happens to look exactly the same as the subject form).
Why does the sentence say handklæðið mitt (literally "the towel my")?
In Icelandic, possessive words like mitt usually come after the noun. When you do this, the noun almost always takes the attached definite article ("the"). So, instead of saying "my towel", you say "the-towel my" (handklæði-ð mitt).
Is handklæðið in the accusative case here? It looks like the dictionary form!
Yes, it is in the accusative case because it is the object receiving the action of the verb notar (is using). It looks the same because all neuter nouns in Icelandic have the exact same spelling in both the nominative (subject) and accusative (object) cases.
Does notar mean "uses" or "is using"?
It means both! Icelandic does not have a separate continuous tense like English does. Depending on the context, Hver notar can mean "Who uses" generally, or "Who is using" right now.