"Which day of January is the show date?"
Translation:ʻO ka lā ʻehia o Ianuali ka lā hōʻike?
This one seems very similar to the sentence "The trip is on which day of January?" which is translated as "Aia ka huakaʻi ma ka lā ʻehia o Ianuali?" I guess this one is an equational ʻO sentence because it is basically "Which date in January" = "The show date" as opposed to the other example where it is asking which date the trip is "on" in January?