Learn Hardcore Icelandic: Verslunin lokar klukkan níu í kvöld.

klukkan literally means “the clock,” but in time expressions it functions like English “at … o’clock.” Icelandic uses the definite form of klukka (klukkan) together with a numeral to tell time. So klukkan níu = “at nine.”

Why is níu not declined here?

Cardinal numbers from five upward are indeclinable in Icelandic, so níu (nine) stays the same in all cases. Only the numbers tvö, þrír, and fjórir (2–4) change their endings.

Why is the noun verslunin used instead of verslun?

Icelandic nouns have indefinite and definite forms. verslun means “a store/shop,” while verslunin (with –in) means “the store.” Since we’re talking about a specific store, we use the definite form.

Why is í kvöld used for “tonight”? Can I just say kvöld?

í kvöld is the fixed expression for “tonight” (this evening). The preposition í plus the indefinite noun kvöld gives you “in the evening” in the sense of “tonight.” You can’t drop í; kvöld alone wouldn’t convey the same meaning.

How does Icelandic word order determine the position of the time phrase klukkan níu í kvöld?

Icelandic follows the V2 rule: the finite verb must be in the second position. Here Verslunin (subject) is first, lokar (verb) is second, and the time expression klukkan níu í kvöld comes afterward. You can front the time phrase, but then verb and subject must swap:
Í kvöld lokar verslunin klukkan níu.

Why is lokar in the present tense when talking about tonight’s closing?

Icelandic doesn’t have a separate future tense. The present tense often expresses planned or scheduled events. So Verslunin lokar klukkan níu í kvöld naturally means “The store closes at nine tonight.”