God is all-knowing. If Christ is God, why does he not know the end of days, and only the Father knows?

The Catechism of the Catholic Church says: “By its union to the divine wisdom in the person of the Word incarnate, Christ enjoyed in his human knowledge the fullness of understanding of the eternal plans he had come to reveal. What he admitted to not knowing in this area, he elsewhere declared himself not sent to reveal” (CCC 474).