"Tomorrow it is my last day."

Translation: Amanhã é meu último dia.

[bonatovada]

Not always - there are many, like bom, último, primeiro, etc., that come before. And other can go either before or after, depending on the meaning.

[Weylles]

Why not "dia ultimo"?

[Paulenrique]

"último" should always come before the noun.

[mn3mGAVE]

Why is the translation "Amanhã é meu dia último" rejected ? It might not be the best way but it is still valid.

[Paulenrique]

"dia último" is not correct.

[the1exile]

Can you have "meu dia final"?

[Paulenrique]

No. A native speaker would not use "dia final".