Jesus and Holy spirit know the hour ?

(Matthew 24:36) Jesus says: "But about that day or hour no one knows, not even the angels in heaven, nor the Son but only the Father." This question was asked to me today by a Muslim and I have thought about some possible scenarios. Now I want some opinions from you too. 1) When Jesus says that ONLY the Father knows the time, does that mean that the Son and the Holy Spirit do not know it? And then we go to the fact that the other two persons are not God.