November 18 (Eastern Orthodox liturgics)
- Eastern Orthodox liturgical calendar - November 19
All fixed commemorations below are observed on December 1 by Orthodox Churches on the Old Calendar.
For November 18, Orthodox Churches on the Old Calendar commemorate the Saints listed on November 5.Saints
- Martyr Romanus the Deacon of Caesarea, and child-martyr Barulas of Antioch
- Great-martyr Platon of Ancyra
- Martyrs Zacchaeus the Deacon and Alphaeus, of Caesarea in Palestine
- Venerable Basil.
Pre-Schism Western saints
- Saint Maximus of Mainz, nineteenth Bishop of Mainz in Germany from 354 to 378, who suffered greatly at the hands of the Arians
- Martyrs Oriculus and Companions, martyrs under the Arian Vandals near Carthage in North Africa
- Saint Nazarius, a monk and Abbot of Lérins in France
- Saint Mabyn, nun of Cornwall
- Saint Mawes, Bishop in Cornwall and Brittany
- Saint Keverne, a friend of St Kieran or Piran in Cornwall
- Saint Mummolus, born in Ireland, he was a companion of St Fursey whom he succeeded as Abbot of Lagny in France
- Saints Amandus and Anselm, Abbots of Lérins Abbey.
- Saint Constant, priest-hermit at Lough Erne in Ireland
- Saint Odo of Cluny
Post-Schism Orthodox saints
- Saint Helen, Abbess of Novodevichy Convent, Moscow
- New Martyr Anastasius of Paramythia in Epirus, by beheading, and martyr Daniel
- Saint Nicholas, priest, confessor
Other commemorations
- Translation of the relics of venerable martyr Cosmas of Vatopedi
- Synaxis of All Saints of Estonia.
- Repose of Schema-Archimandrite Vitaly of Glinsk and Tbilisi
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