What is the "bon jou" meaning in this sentence: "...si gen Bondye ak ki jou ki bon jou Bondye a."

bon jou (good day), here, seems to mean the Day Of The Lord or a day for worship
I am not sure which one the writer meant.

... ki jou ki bon jou Bondye a ...
... which day is the good day of the Lord (literally)
... which day is the day of the Lord 

Haitian Creole ↔ English Reference, Look up Haitian Creole and English Words