Eve of the Theophany of our Lord and Savior Jesus Christ
The fourth day of the Forefeast of Theophany falls on January 5. If January 5th falls on a weekday, the following order is observed:
Vespers on the evening of the 4th, then Matins. The First Hour is not read after Matins.
On the 5th we read the Royal Hours, followed by Vespers and the Liturgy of Saint Basil the Great.
If the Eve of Theophany falls on Saturday:
The Royal Hours are read on Friday, but there is no Liturgy. Vespers on the evening of the 4th, followed by Matins. The Liturgy of Saint John Chrysostom is celebrated on Saturday morning.
If the Eve of Theophany falls on a Sunday:
The Royal Hours are read on Friday, but there is no Liturgy. Vigil is served on Saturday evening, and the Liturgy of Saint John Chrysostom is celebrated on Sunday.
There are thirteen readings at Vespers on the Eve of Theophany, and the entrance is made with the Gospel. There is fasting today, whatever day of the week it may be.