July 1 in Eastern Orthodox liturgical calendars is a feast day and a day of commemoration of saints and martyrs. Although some Orthodox churches use the Revised Julian Calendar and others use the traditional Julian calendar, the fixed commemorations for their respective July 1 are broadly the same, no matter which calendar is used.
Holy and Wonderworking Unmercenaries Cosmas and Damian of Rome, brothers (284)
Saint Potitus od Gargara, martyr (2nd century)
Holy 2000 Martyrs, by the sword.
Holy 25 Martyrs in Nicomedia, by fire.
Saint Shenoute, Archimandrite, Father of the Third Ecumenical Council (d. 465).
Venerable Peter the Patrician (Peter of Constantinople), monk (854)
Venerable Basil, founder of the Monastery of the Deep Stream, Cappadocia (10th century)
Saint Leo the Hermit, Ascetic.
Saint Martin of Vienne, third Bishop of Vienne in France (c. 132)
Martyr Potitus at Naples (161) (see also: January 13)
Martyrs Julius and Aaron, Protomartyrs of Wales, suffered in Caerleon-on-Usk under Diocletian (304)
Saints Castus and Secundinus, much venerated in the south of Italy; they were born in Sinuessa (Mondragone) near Caserta (305)
Saint Theodoric (Thierry, Theodericus), Abbot of Mont d'Or near Rheims in the north of France; priest and disciple of the blessed Bishop Remigius (c. 533)
Saint Carilefus (Calais), a companion of St Avitus, founded the monastery of Anisole in Maine in France (c. 536)
Saint Gal I (Gallus of Clermont), Bishop of Clermont, uncle and teacher of St Gregory of Tours (c. 553)
Saint Leonorius (Léonor, Lunaire) (c. 570)
Saint Eparchius (Cybar), born in a noble family in Périgord in France, he renounced his title to become a monk at Sessac in Gaul (581)