January 1 - Eastern Orthodox liturgical calendar - January 3
Saint Sylvester, Pope of Rome, and the Emperor Constantine the Great.
Adoration of the Cross by Pope St. Sylvester I, Empress Helena and Emperor Constantine.
Martyr Basil of Ancyra (Menologion of Basil II, 10th century).
Relics of Saint Martinianus of Milan, in the Cathedral of Milan.
The Eastern Orthodox liturgical calendar describes and dictates the rhythm of the life of the Eastern Orthodox Church. Passages of Holy Scripture, saints and events for commemoration are associated with each date, as are many times special rules for fasting or feasting that correspond to the day of the week or time of year in relationship to the major feast days.