Christianfeast day:

Bardo, Getulius, Amancius and Cerealus, Guardian Angel of Portugal, John of Tobolsk(Russian Orthodox Church), Landry of Paris, Maurinus of Cologne, Maximus of Aveia (or of Aquila), Maximus of Naples, Olivia, June 10 (Eastern Orthodox liturgics)

Commemorates the feast days of several saints and holy figures across Christian traditions.
On June 10, multiple saints are honoured in various Christian denominations, each celebrated for their devotion and faith. The Eastern Orthodox Church observes liturgies for figures such as John of Tobolsk and regional martyrs. The Roman Catholic calendar also marks the feast days of Bardo, Getulius, Amancius, Cerealus, and others. Special services, prayers, and historical reflections take place in parishes and monasteries. This day offers believers an opportunity to remember the lives and legacies of these spiritual figures.
feast day Bardo Getulius, Amancius and Cerealus Guardian Angel of Portugal John of Tobolsk Russian Orthodox Church Landry of Paris Maurinus of Cologne Maximus of Aveia (or of Aquila) Maximus of Naples Olivia June 10 (Eastern Orthodox liturgics)

Bardo

Bardo

Getulius, Amancius and Cerealus

Getulius, Amancius and Cerealus

Guardian Angel of Portugal

Guardian Angel of Portugal

John of Tobolsk(Russian Orthodox Church)

John of Tobolsk Russian Orthodox Church

Landry of Paris

Landry of Paris

Maurinus of Cologne

Maurinus of Cologne

Maximus of Aveia (or of Aquila)

Maximus of Aveia (or of Aquila)

Maximus of Naples

Commemorates Saint Maximus of Naples, a 4th-century bishop noted for his steadfast defense of orthodox faith and reputed miracles.
Saint Maximus of Naples served as bishop in the 4th century, bravely opposing Arianism during the reign of Emperor Constantius II. He is celebrated for his pastoral care and reputed miracles, including healings and exorcisms. After his death around 361 AD, devotion to him grew in the Campania region. His feast day on June 10 is observed with liturgical celebrations, processions, and readings of his writings. The day invites the faithful to reflect on the defense of orthodox doctrine and to seek spiritual healing through his intercession.
Maximus of Naples

Olivia

Feast day of Saint Olivia of Palermo, a 5th-century martyr and patroness honored for her unwavering faith.
Saint Olivia of Palermo lived in the 5th century and is venerated for her devotion and martyrdom under pagan persecution. Tradition holds that she renounced marriage to dedicate her life to Christ and was executed for refusing idolatry. Her tomb became a pilgrimage site in Palermo, where she is invoked as patroness and protector, especially against natural disasters. On June 10, the faithful celebrate her feast with processions, special masses, and communal prayers in her honor. The day highlights themes of courage, purity, and divine intercession.
Olivia

June 10 (Eastern Orthodox liturgics)

Observances in the Eastern Orthodox Church celebrating commemorations of saints and liturgical events on June 10.
In the Eastern Orthodox tradition, each day is dedicated to the remembrance of specific saints and feasts. On June 10, the church commemorates a variety of holy figures, including martyrs, bishops, and venerable monastics. Communities mark the day with the Divine Liturgy, festal hymns, and readings from Holy Scripture. Icon veneration and processions often accompany local observances tied to one of the day’s saints. As part of the afterfeast of the Ascension, the services blend themes of Christ’s triumph with the witness of the saints, offering the faithful a time for reflection and spiritual renewal.
June 10 (Eastern Orthodox liturgics)