Equal to the Apostles
Holy Equal-to-the-Apostles Emperor Constantine the Great († 337) with his Mother Helen († 327)
In Russian: Равноапп. царя Константина (337) и матери его царицы Елены (327)
In Church Slavonic: Ст҃ы́хъ вели́кихъ царе́й и҆ равноапо́столѡвъ кѡнстанті́на (337) и҆ ма́тере є҆гѡ̀ є҆ле́ны (327)
Feast days
2026
Old calendar
- (21 May on the Old calendar), repose
New calendar
- , repose
2027
Old calendar
- (21 May on the Old calendar), repose
New calendar
- , repose
Also commemorated on 3 June 2026
- Pentecost Wednesday
- ✚Meeting of the Vladimir Icon of the Mother of God (established in memory of the deliverance of Moscow from the Tatar invasion led by Crimean Khan Makhmet-Girei in 1521)
- Venerable Prince Yaroslav, (in baptism Constantine) († 1129), with his children Michael and Theodore, Wonderworkers of Murom (12th C)
- Uncovering of the relics of Blessed Andrew of Simbirsk (1998)
- Venerable Cassian the Greek of Uglich († 1504)
- Synaxis of All Saints of Karelia
- Revered lists of the Vladimir Icon of the Mother of God: the Pskov-Kiev Caves “Tenderness” (1524), Zaonikievskaya (1588), Krasnogorskaya or Montenegro (1603), Orange (1634)