Son ödeme tarihi cuma günü.

A word-by-word breakdown is:

• son = last, final
• ödeme = payment
• tarihi = its date / date of
• cuma = Friday
• günü = day / on the day of

So the whole sentence means The due date is Friday or more literally The final payment date is Friday day.

A more natural way to understand the structure is:

• son ödeme tarihi = due date / final payment date
• cuma günü = on Friday / Friday

In Turkish, the verb to be is often omitted in the present tense, especially in simple statements.

So:

• Son ödeme tarihi cuma günü. = The due date is Friday.

There is no separate word like English is here.

If you want to make it more explicit or formal, you can add -dir:

• Son ödeme tarihi cuma günüdür.

That means the same thing, but sounds more formal, official, or emphatic.

Turkish often puts information in a different order from English, but this sentence is actually very typical and straightforward for Turkish:

• Son ödeme tarihi = the subject/topic
• cuma günü = what it is

So the pattern is basically:

• [Subject] + [predicate]
• Due date + Friday

That is normal Turkish sentence order.

English needs is in the middle, but Turkish does not in this kind of sentence.

Because ödeme tarihi is a noun compound.

In Turkish, when one noun describes another noun, the second noun often takes a possessive-type ending. So:

• ödeme = payment
• tarih = date
• ödeme tarihi = payment date

Here, tarih becomes tarihi because of this compound structure.

Then son ödeme tarihi means final payment date or due date.

This is a very common pattern in Turkish, for example:

• okul kapısı = school door
• yemek masası = dining table
• doğum tarihi = birth date

Both can be understood, but cuma günü is a very common and natural way to say on Friday or Friday as a day/time expression.

• cuma = Friday
• cuma günü = Friday day / on Friday

The word günü here is not an accusative ending. It is part of a fixed time expression built from gün with a possessive ending.

Turkish often uses day names this way:

• pazartesi günü = Monday
• salı günü = Tuesday
• cuma günü = Friday

In everyday speech, people may also simply say cuma if the meaning is clear.

No. That is a very common confusion.

In günü, the -ü is not the accusative case. Here the word is:

• gün = day
• gün + ü = günü

This is a 3rd person possessive form, used in expressions like cuma günü.

So cuma günü is a set expression meaning something like Friday’s day or simply Friday.

It is not functioning like a direct object here.

In Turkish, days of the week are normally written with lowercase letters unless they are part of a full date or appear at the beginning of a sentence.

So this is correct:

• Son ödeme tarihi cuma günü.

And this would also be correct if it started the sentence:

• Cuma günü son ödeme tarihi.

English capitalizes Friday, but Turkish usually writes cuma in lowercase.

The same is true for months:

• ocak, şubat, mart

A rough pronunciation guide is:

• Son = like sohn
• ödeme = uh-deh-meh
• tarihi = tah-ree-hee
• cuma = joo-mah
• günü = goo-new

A fuller approximation:

sohn uh-deh-meh tah-ree-hee joo-mah goo-new

A few notes:

• ö is like the vowel in German schön or French bleu
• ü is like the vowel in French tu or German über
• c in Turkish is pronounced like English j in jam

Yes. That is correct.

• Son ödeme tarihi cuma günü.
• Son ödeme tarihi cuma günüdür.

Both mean the same thing.

The version with -dür is more:

• formal
• official
• written
• emphatic

In everyday conversation, the shorter version without -dür is more common.

Yes, very much so. It is a standard expression meaning due date.

Literally it is:

• son = final
• ödeme = payment
• tarihi = date

So son ödeme tarihi = final payment date, which in natural English is usually due date.

You will often see it on:

• bills
• bank statements
• credit card notices
• invoices
• online payment pages

Yes. That is a very close literal translation.

Depending on context, natural English translations include:

• The due date is Friday.
• The final payment date is Friday.
• The payment is due on Friday.

Even if the exact English wording changes, the Turkish structure stays the same.

Because son is an adjective here, and Turkish adjectives do not agree with nouns the way they do in many European languages.

So:

• son ödeme tarihi = final payment date
• son gün = last day
• son fırsat = final opportunity

The adjective son stays the same. It does not change for number, gender, or case.

It works especially well in practical, written, and semi-formal contexts, such as:

• bills
• notices
• payment reminders
• customer service messages

In conversation, people might also say things like:

• Son ödeme tarihi cuma.
• Ödeme cuma günü.
• En geç cuma ödenmesi gerekiyor.

But Son ödeme tarihi cuma günü is completely natural and standard, especially in written Turkish.