"How is the night brother?"

Translation: habari za usiku kaka?

[dmcmahon7202]

How can you tell when to use "za" over "ya" and vice versa?

[KwincyofKenya]

Have the same question. :/
I think it has to do with the noun.

[TomHawkins17]

habari za usiku ndugu is correct for how is the night brother. I know, I go to Kenya. That is how we say it.