Christianfeast days:

Adheritus, Bonfilius, Caius of Milan, Vincent de Paul, Cosmas and Damian, September 27 (Eastern Orthodox liturgics)

An Eastern Orthodox liturgical observance honoring early Christian saints such as Vincent de Paul, Cosmas and Damian.
On September 27, the Eastern Orthodox Church commemorates saints including Adheritus, Bonfilius, Caius of Milan, Vincent de Paul, and the martyr twins Cosmas and Damian. These feasts celebrate the lives and legacies of early Christian figures who contributed to the faith through service, healing, and teaching. Vincent de Paul is known for his charitable work, while Cosmas and Damian are revered as patron saints of physicians. The day is marked by special liturgies, prayers, and readings in the Orthodox calendar. Communities may hold church services, processions, and venerate icons representing the honored saints.
feast days Adheritus Bonfilius Caius of Milan Vincent de Paul Cosmas and Damian September 27 (Eastern Orthodox liturgics)

Meskel(EthiopianandEritrean Orthodox Church, followingJulian calendar, September 28 on leap years)

An Orthodox Christian festival in Ethiopia and Eritrea commemorating the discovery of the True Cross.
Meskel is celebrated on September 27 (or September 28 in Julian leap years) by the Ethiopian and Eritrean Orthodox Churches. The festival honors Empress Helena of Constantinople’s finding of the True Cross in the 4th century. Communities light large bonfires called Demera to symbolize the bonfire that guided Helena to the cross. Clergy lead prayers and hymns, and believers exchange gifts and traditional foods. The day is marked by festive gatherings, colorful processions, and the reading of religious texts, reinforcing faith and cultural unity.
Meskel Ethiopian Eritrean Orthodox Church Julian calendar

Adheritus

Feast day commemorating Saint Adheritus in the Eastern Orthodox tradition.
Saint Adheritus is honored on September 27 in Eastern Orthodox liturgical calendars as a bishop and martyr of the early Church. Little is known about his life, but traditions credit him with pastoral care and defense of orthodoxy. The day is observed with special church services, icon veneration, and readings of his life and martyrdom. Faithful gather to pray for guidance and spiritual strength, drawing inspiration from his example of steadfast faith amid persecution. His feast reflects the Church’s remembrance of lesser-known saints whose sacrifices shaped Christian history.
Adheritus

Bonfilius

Feast day of Saint Bonfilius, observed in certain Christian liturgical traditions.
Saint Bonfilius is celebrated on September 27 by the Eastern Orthodox and some Western Christian communities. Recognized as a faithful companion to Saint Adrian, Bonfilius is remembered for his devotion and service within the Church. Liturgical commemorations include special hymns, prayers, and the reading of his acts of charity. Monastic communities may hold vigils in his honor, emphasizing humility and obedience. The feast day encourages believers to emulate his virtues of loyalty and selfless service.
Bonfilius

Caius of Milan

Feast day of Saint Caius, early Bishop of Milan, honored for his steadfast leadership in the 3rd century.
Saint Caius of Milan led the Christian community in the turbulent 3rd century and guided the church through challenges and persecutions. He is remembered for his pastoral care, dedication to liturgical development, and efforts to support the poor in Milan. Each year on September 27, the Church commemorates his legacy with readings and prayers that reflect on his faith and leadership. Although few historical records remain, his influence helped shape the Milanese see and prepared the way for later figures like Saint Ambrose. Pilgrims and historians alike revere his contributions to early ecclesiastical structure and worship practices.
Caius of Milan

Vincent de Paul

Celebration of Saint Vincent de Paul, the 17th-century French priest known for founding charitable organizations and serving the poor.
Saint Vincent de Paul dedicated his life to serving the marginalized and founded the Congregation of the Mission and the Daughters of Charity. He pioneered organized charity work in 17th-century France, introducing mobile hospitals and soup kitchens for the poor. His feast day on September 27 honors his compassion and innovative spirit in social service. Millions continue his mission through Vincentian societies and charitable organizations worldwide. Events include fundraisers, volunteer drives, and reflections on his enduring legacy.
Vincent de Paul

Cosmas and Damian

Feast of Saints Cosmas and Damian, twin physician martyrs celebrated as patron saints of healing and medicine.
Saints Cosmas and Damian were twin physicians from the 3rd century who offered free medical care to the poor and suffered martyrdom under Diocletian. Their healing miracles and refusal to accept payment earned them the title 'Anargyroi,' meaning 'the silverless.' Their feast on September 27 celebrates their devotion, courage, and the ideal of medicine as a vocation of mercy. They remain patron saints of physicians and pharmacists, inspiring healthcare professionals around the world. Liturgies feature hymns and prayers that honor their unwavering faith and charitable works.
Cosmas and Damian

September 27 (Eastern Orthodox liturgics)

Collection of observances in the Eastern Orthodox Church on September 27, marking various saints and commemorations.
In the Eastern Orthodox tradition, September 27 is marked by commemorations of saints and sacred events that span centuries and regions. Celebrants observe liturgical services with the chanting of troparia, kontakia, and selected scriptural readings. Icons of the day's saints are venerated, and hymns highlight their virtues, miracles, and spiritual teachings. This daily observance connects the faithful to the early Church and reinforces themes of unity and devotion. Special prayers and processions often accompany services in monasteries and parishes worldwide.
September 27 (Eastern Orthodox liturgics)