Ombookingen endres i lys av rutetabellen.

Ombookingen is the definite form of ombooking, which means rebooking or rescheduling a booking.

It breaks down like this:

• om- = re-, again, or change
• booking = booking
• -en = the (definite singular ending for many masculine nouns)

So:

• en ombooking = a rebooking
• ombookingen = the rebooking

In context, it can refer either to:

• the actual changed booking, or
• the process of rebooking

Both are possible depending on context.

Endres is a passive form here.

Compare:

• endrer = changes / is changing / changes something
• endres = is changed

So:

• Vi endrer ombookingen = We change the rebooking
• Ombookingen endres = The rebooking is changed

This -s passive is very common in Norwegian, especially in formal, written, or administrative language.

In this sentence, it functions as a passive.

Norwegian -s forms can sometimes overlap historically with reflexive meanings, but for learners, the most useful thing here is:

• endres = is changed

So Ombookingen endres means that something is being done to the rebooking, not that the rebooking is somehow changing itself in an active sense.

I lys av is an idiomatic expression meaning:

• in light of
• in view of
• considering

So i lys av rutetabellen means something like:

• in light of the timetable
• based on the timetable
• taking the timetable into account

It is a fairly formal expression, and it is very common in official or professional language.

Because i lys av is a fixed expression.

You should learn it as a whole phrase:

• i lys av = in light of

Even though lys literally means light, the full expression is idiomatic and not something you should translate word by word too literally.

Rutetabellen is the definite singular form of rutetabell, meaning:

• timetable
• schedule

It breaks down as:

• rute = route / service line
• tabell = table / chart / schedule
• -en = the

So:

• en rutetabell = a timetable
• rutetabellen = the timetable

This word is often used for transport schedules such as trains, buses, ferries, or flights.

Because both are in the definite singular form.

In Norwegian, instead of putting a separate word like the in front of the noun, you usually add a definite ending to the noun itself.

Here:

• ombooking → ombookingen
• rutetabell → rutetabellen

So both mean the ....

This is standard Norwegian main-clause word order:

• Ombookingen = subject
• endres = verb
• i lys av rutetabellen = prepositional phrase giving context/reason

So the structure is:

Subject + verb + adverbial phrase

That is very normal in Norwegian.

Yes. That would also be correct.

Compare:

• Ombookingen endres = The rebooking is changed
• Ombookingen blir endret = The rebooking is being changed / gets changed

Both are passive, but they differ slightly in style:

• -s passive (endres) often sounds more formal, concise, and administrative
• bli + past participle (blir endret) can sound a bit more neutral or conversational

In a formal notice or system message, endres is very natural.

Yes, it is grammatical and natural, especially in a formal or administrative context.

It sounds like something you might see in:

• a travel system
• customer service communication
• an automated booking message
• official written information

It is not especially conversational, but it is perfectly normal written Norwegian.

Yes, depending on the tone you want.

Some simpler or less formal alternatives are:

• på grunn av rutetabellen = because of the timetable
• ut fra rutetabellen = based on the timetable
• med utgangspunkt i rutetabellen = with the timetable as a basis

But these are not always identical in nuance.

I lys av suggests taking something into consideration rather than just a simple cause. It often sounds more careful and formal than på grunn av.

A very literal translation would be:

The rebooking is changed in light of the timetable.

That said, in more natural English, depending on context, you might also understand it as something like:

• The rebooking is adjusted based on the timetable.
• The rebooking is changed in accordance with the timetable.

So the literal meaning is clear, but the smoothest English wording may vary by context.