Breakdown of Viðtalið er eftir viku.
vera
to be
vikan
the week (f)
eftir
after / for (waiting for)
viðtalið
the interview
Questions & Answers about Viðtalið er eftir viku.
Why does eftir translate to "in" here instead of "after"?
When eftir is used with an amount of time to talk about the future, it translates to "in". You are literally saying "after a week [has passed]", which is the natural way to say "in a week" in Icelandic.
Why is the word for week spelled viku instead of vika here?
The preposition eftir requires the accusative case when used to express "in [amount of time]". Vika is a feminine noun, and its accusative form is viku.
Why doesn't viku have the definite article attached?
Just like in English, Icelandic uses the indefinite form to say "in a week" (eftir viku). If you added the definite article (eftir vikuna), it would mean "after the week [is over]", rather than exactly one week from now.
How is the word viðtalið put together?
It is the neuter noun viðtal (interview) plus the attached definite article -ið, giving us "the interview". The noun itself is a compound of við (with) and tal (talk).