i know good night is Iyi gecele but ive alslo seen it Iyi geceler which is the right one or are they both right?

Ýyi geceler is good night. I don´t think iyi gecele is grammatically correct for "good night" (it might mean something else for all I know - gecelemek means spend the night, so iyi gecele may mean "spend the night well"). Anyway, iyi geceler is correct.

 iyi geceler is correct

ah ok then thanks for clearing that up, just that i seen both of them and thought maybe one is a spelling mistake or something

Thanks