6 January or (in England and Wales) 2–8 January
In the Missal there are two sets of texts: a Vigil Mass and a Day Mass; in the Lectionary there is only one set of readings.
Antiphons
The Epiphany of the Lord: Vigil
EA Arise, Jerusalem (71)
CA The brightness of God (96)
The Epiphany of the Lord: Day
EA Behold, the Lord, the Mighty One, has come (Rev 15)
CA We have seen his star in the East (71)
Responsorial Psalm
Psalm 71 (72): 1. 2. 7-8. 10–13 r. cf. 11 — All nations shall fall prostrate before you, O Lord.
Common Psalm
Psalm 71 (72): 1. 2. 7-8. 10–13 r. cf. 11 — Before you all kings shall fall prostrate, all nations shall serve you.