Basically it means, "At last, it's finally Sunday".
Finally
"Por fin" means "finally" in English. It is used to express relief or satisfaction that something has happened after a period of waiting or anticipation.
It means, "At last I'm happy."
If you mean the Spanish ''por'' as in the English ''for'', its για (gia).
The question "Por que la pregunta mean in English" translates to "Why does the question mean in English?" in English.
Por lo general, el fin de semana está compuesto por el sábado y el domingo. Sin embargo, en algunos países el fin de semana puede variar y abarcar otros días, como el viernes en algunos lugares de Medio Oriente o el sábado y domingo en Israel.
What are you going to do Sunday morning?
es por ti = is for you
por auto = by car
For your
if
The cast of Domingo por la Tarde - 2009 includes: Adriana Moraga