thumb|An [[Eastern Orthodox Church|Eastern Orthodox cross]]

April 18 - Eastern Orthodox liturgical calendar - April 20

All fixed commemorations below are observed on May 2 by Eastern Orthodox Churches on the Old Calendar.

For April 19th, Orthodox Churches on the Old Calendar commemorate the Saints listed on April 6.

Saints

  • Martyrs Theodore of Perge in Pamphylia, his mother Philippa, and Dioscorus, Socrates, and Dionysius (c. 138-161)
  • Hieromartyr Paphnutius of Jerusalem and 546 companions martyred with him (284-305) <small>(see also: September 25)</small>
  • Martyrs Hermogenes, Caius, Expeditus, Aristonicus, Rufus and Galatas, at Melitine, in Armenia.
  • Martyrs Christopher, Theonas, and Antoninus, at Nicomedia (303) <small>(see also: April 20)</small>
  • Saint George the Confessor, Bishop of Antioch in Pisidia, Confessor of the Faith (c. 741-775)
  • Venerable John of the Ancient Caves (John Paleolavrite) in Palestine (8th century) <small>(see also: April 20)</small>
  • Saint Tryphon of Constantinople, Patriarch of Constantinople (931)
  • St. Nicephorus, Abbot of Katabad.

Pre-Schism Western saints

  • Saint Vincent of Collioure, a martyr in Collioure in Languedoc in the south of France, under Diocletian (c. 304)
  • Saint Crescentius, confessor, a subdeacon in Florence in Italy and a disciple of St Zenobius and St Ambrose (c. 396)
  • Hieromartyr Alphege of Canterbury, Archbishop of Canterbury (1012)