Olga (Όλγα)
Also: Olga
Name day:
11 July
✓ sourced
Sources: namedays.gr / eortologio.gr online database (T2), OCA daily calendar (Slavic lineage — dates only, never name→feast) (T2)
Equal-to-the-Apostles Blessed Great Princess Olga (in Holy Baptism Helen). OCA 2026-07-11 + namedays.gr OLGA 11 July.
Sourced (✓) feasts are confirmed by two lineage-independent sources and are safe to put in a calendar. Unverified (⚠) feasts — whether resting on a single source or on a judgment call awaiting the printed synaxaria — are shown for reference but held out of feeds until confirmed.