Epiphany (/ɪˈpɪfəni/ i-PIF-ə-nee) is a Christian feast day that celebrates the revelation (theophany) of God incarnate as Jesus Christ.

In Western Christianity, the feast commemorates principally (but not solely) the visit of the Magi to the Christ Child, and thus Jesus' physical manifestation to the Gentiles. It is sometimes called Three Kings' Day, and in some traditions celebrated as Little Christmas.
(Wikipedia)