Revisions of the General Roman Calendar made the Three Kings Day date to some extent variable, assigning the celebration of the day to occur on the Sunday between January 2 and 8, though it is still more widely celebrated on January 6, 12 days after Christmas.
The pilgrim Egeria described a celebration in Jerusalem and Bethlehem, which she called "Epiphany" that commemorated the Nativity.
St. Gregory of Nazianzus referred to the day as "the Theophany", saying that the day commemorates the holy nativity of Christ.
Though Three Kings Day originated in the Greek speaking eastern half of the Roman Empire, Clement of Alexandria wrote that followers of Basilides in Egypt also celebrated the day of Jesus' baptism.