It is celebrated 01.01.2026 according to the Julian calendar, or 14.01.2026 according to the Gregorian calendar. See what else we celebrate on that day here.
St. Gregory, bishop of Nazianzus (374) and father of St. Gregory the Theologian
The father of St. Gregory the Theologian died in peace in 374, a one hundred year old man.
The father of St. Gregory the Theologian died in peace in 374, a one hundred year old man. 
