Three Kings' Day
In Western Christianity, the feast commemorates principally 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. Moreover, the feast of the Epiphany, in some denominations, also initiates the liturgical season of Epiphanytide.
To celebrate, all that we really have to do is prepare a large meal with Hexapi's Recipe for our family and friends, invite them over, and enjoy the day.