Maadamu ratiba haijabadilika, safari ya usiku itaendelea.

Maadamu means as long as, provided that, or sometimes so long as. It introduces a condition, but it often sounds a bit stronger or more specific than a basic if.

So in this sentence, Maadamu ratiba haijabadilika means something like:

• As long as the schedule has not changed
• Provided that the schedule has not changed

A simple if in Swahili is often kama or ikiwa, but maadamu emphasizes that the second part depends on that condition continuing to be true.

Swahili verbs usually pack a lot of information into one word. Haijabadilika can be broken down like this:

• ha- = negative
• i- = subject marker for a class 9 singular noun, here ratiba
• -ja- = perfect marker, often giving the sense of has
• badilika = change / become changed

So haijabadilika means:

• it has not changed
• it hasn’t changed

It is written as one word because Swahili verb structure normally combines subject, tense/aspect, negation, and verb stem into a single verb form.

Because ratiba belongs to a noun class that usually takes i- as its singular subject marker.

In Swahili, verbs must agree with the noun that is doing the action or being described. Since ratiba is a class 9 noun, the verb uses the class 9 agreement marker:

• ratiba imebadilika = the schedule has changed
• ratiba haijabadilika = the schedule has not changed

This agreement system is one of the most important features of Swahili grammar.

This is a very common question.

• kubadilika = to change, to become different
• kubadilisha = to change something, to alter something

So:

• Ratiba imebadilika = The schedule has changed
• Meneja amebadilisha ratiba = The manager has changed the schedule

In your sentence, haijabadilika comes from kubadilika, so the idea is that the schedule itself has not changed.

Usually, in a sentence like this, it most naturally means has not changed.

That is because kubadilika is normally understood as an intransitive verb: something changes or becomes changed.

If you specifically wanted to say has not been changed in a more clearly passive sense, Swahili would often use a different form, such as:

• haijabadilishwa

So for learners, the safest reading here is:

• the schedule has not changed

Itaendelea breaks down like this:

• i- = subject marker for class 9 singular, here referring to safari
• -ta- = future marker, will
• endelea = continue

So itaendelea means:

• it will continue

This is a very typical Swahili future form:

• safari itaendelea = the journey will continue
• ratiba itaendelea = the schedule will continue

The i- changes depending on the noun class of the subject.

The ya is the connector that links safari with usiku. It agrees with the noun safari.

So:

• safari ya usiku literally means something like journey of night
• natural English: night journey, night trip, or overnight trip, depending on context

The connector changes with noun class. Since safari is a class 9 noun, the connector is ya.

Compare:

• kitabu cha mwanafunzi = the student’s book
• mtoto wa jirani = the neighbor’s child
• safari ya usiku = night journey

Usiku means night or at night, depending on context.

In safari ya usiku, it describes the trip as one connected with nighttime, so it means:

• night trip
• journey at night
• sometimes overnight journey, if the context supports that

So usiku is not acting like an adjective by itself. Instead, Swahili uses the structure noun + connector + noun, literally journey of night.

Swahili does not usually use articles like English a, an, and the.

That means nouns like ratiba and safari can mean:

• a schedule / the schedule
• a trip / the trip

The exact meaning comes from context.

So ratiba haijabadilika could be understood as:

• the schedule has not changed
• a schedule has not changed

But in most real contexts, English would naturally translate it as the schedule has not changed.

Yes. Swahili often puts the condition first, as in your sentence:

• Maadamu ratiba haijabadilika, safari ya usiku itaendelea.

This is very natural and emphasizes the condition first.

But you could also say:

• Safari ya usiku itaendelea maadamu ratiba haijabadilika.

That means essentially the same thing: The night journey will continue as long as the schedule has not changed.

So the order is somewhat flexible, though the original version sounds very natural for presenting the condition first.

It sounds fairly neutral to slightly formal.

A few things contribute to that:

• maadamu is a bit more formal or polished than the most basic everyday kama
• the whole sentence has a clear, written, informative style
• it sounds like something you might see in an announcement, report, or official communication

It is not overly stiff, but it is not especially casual either.

You know from the structure and meaning of the sentence.

The second clause is:

• safari ya usiku itaendelea

Here, safari ya usiku is the subject of itaendelea, so the i- agrees with safari.

The first clause is:

• ratiba haijabadilika

There, ratiba is the subject of haijabadilika, so that verb also uses class 9 agreement.

Since both ratiba and safari are class 9 nouns, both verbs happen to use i- agreement. That can look confusing at first, but each verb agrees with the subject in its own clause.