Questions & Answers about Landingen skjer om kvelden.
Landingen is the definite form of the noun, meaning the landing rather than just landing.
- en landing = a landing
- landingen = the landing
Norwegian adds the definite article to the end of the noun instead of usually putting a separate word in front, as English does.
So in this sentence, landingen refers to a specific landing that both speaker and listener can identify.
Skjer is the present tense of å skje, which means to happen or to take place.
So Landingen skjer ... literally means something like:
- The landing happens ...
- The landing takes place ...
In natural English, you might translate it more smoothly depending on context, but grammatically skjer is simply the verb happens / takes place.