The descent of the Holy Spirit upon the Apostles fifty days after Pascha, marking the full revelation of the Holy Trinity and the beginning of the Church's mission in the world. During Vespers, special kneeling prayers are offered and the church is adorned with greenery. This feast celebrates the completion of Christ's saving work and the outpouring of the Holy Spirit upon all believers. From this day forward, the Sundays of the year are numbered from Pentecost, signifying the continual life and growth of the Church in the grace of the Spirit.

The central worship service of the Orthodox Church, celebrating the Eucharist (Holy Communion). Usually celebrated on Sundays and feast days, the Divine Liturgy consists of the Liturgy of the Word (scripture readings) and Liturgy of the Faithful (Eucharistic prayer and communion). The most common forms are the Liturgies of St. John Chrysostom and St. Basil the Great.

Brief prayer services traditionally celebrated at specific times of day: First Hour (6 AM), Third Hour (9 AM), Sixth Hour (noon), and Ninth Hour (3 PM). Each Hour includes psalms, troparia, and prayers appropriate to that time of day. These services sanctify the day and connect us to Christ's Passion, as they commemorate specific moments in His crucifixion and death.

The evening prayer service of the Orthodox Church, traditionally celebrated at sunset. Vespers includes psalms, hymns, scripture readings, and incense. On Saturday evenings, Great Vespers is often combined with the Sunday Divine Liturgy. The service marks the end of the liturgical day and prepares the faithful for rest and reflection.

The sacrament of reconciliation through which the faithful confess their sins to a priest and receive absolution. Also called the sacrament of repentance or penance, confession restores the baptismal purity lost through sin and reconciles the penitent with God and the Church. The penitent stands before an icon of Christ while confessing to the priest, who acts as a witness and minister of God's forgiveness. The priest then covers the penitent's head with his epitrachelion (stole) and pronounces the prayer of absolution.

The commemoration of the Archangel Michael and all the bodiless powers (angels) on November 8th. This feast celebrates the angelic hierarchy and Michael's role as leader of God's army against evil. Orthodox tradition honors angels as God's messengers and guardians, with Michael being especially venerated as protector of the Church and individual Christians.

The 20th-century bishop and wonderworker known for his humility and miraculous healings. Celebrated on November 9th, Nectarios founded a convent on Aegina and was known for his simple lifestyle despite his theological learning. Many miracles have occurred through his intercession, especially healings from cancer. He represents modern Orthodox sanctity and the power of humble service.

The Archbishop of Constantinople known as the 'Golden-Mouthed' for his eloquent preaching. Celebrated on November 13th, Chrysostom wrote the Divine Liturgy used most frequently in Orthodox churches. His biblical commentaries and moral teachings, along with his care for the poor, made him one of the greatest Church Fathers.

One of the twelve apostles, called directly by Jesus in Galilee. Celebrated on November 14th, Philip brought Nathanael to Christ and questioned Jesus about feeding the five thousand. He preached in Asia Minor and was martyred in Hierapolis. He represents thoughtful faith and bringing others to encounter Christ.

The 14th-century Archbishop of Thessalonica who defended hesychast spirituality and taught about the uncreated energies of God. Celebrated on the Second Sunday of Lent, Palamas developed theological foundations for mystical prayer and the Jesus Prayer tradition. His teachings on theosis (deification) are central to Orthodox spiritual life.

The celebration of Christ's birth in Bethlehem. The feast is preceded by a 40-day Nativity Fast and celebrated with the Divine Liturgy, special hymns like the Troparion of the Nativity, and the blessing of homes.

A service that replaces the Divine Liturgy when no priest is available, or serves as a communion service using previously consecrated elements. Typika includes psalms, scripture readings, and prayers similar to the Liturgy but without the Eucharistic prayer. This service allows communities to maintain liturgical worship even when circumstances prevent the celebration of the full Divine Liturgy.

The sacrament of initiation into the Orthodox Church, through which a person is united with Christ in His death and resurrection. The baptismal candidate is immersed three times in water in the name of the Father, Son, and Holy Spirit, dying to sin and rising to new life in Christ. Baptism cleanses from original sin, grants adoption as God's child, and makes the person a member of the Body of Christ. In Orthodox practice, baptism is immediately followed by chrismation and first communion.

The presentation of the three-year-old Virgin Mary in the Temple by her parents, Saints Joachim and Anna. Celebrated on November 21st, this feast honors Mary's dedication to God and her preparation for her role as Theotokos. According to tradition, Mary was raised in the Temple until her betrothal to Joseph.

The learned virgin martyr of Alexandria who defeated pagan philosophers in debate. Celebrated on November 25th, Katherine is patron of scholars, philosophers, and students. When tortured on a spiked wheel, it broke miraculously. She represents the union of faith and reason, showing that true learning leads to Christ.

The first-called apostle and brother of Peter, who brought Peter to Christ. Celebrated on November 30th, Andrew is patron of Russia, Scotland, and Greece. According to tradition, he preached throughout Asia Minor and was crucified on an X-shaped cross, which bears his name. He represents the call to bring others to Christ.

The sacrament of sealing with the Holy Spirit, administered immediately after baptism in the Orthodox Church. The priest anoints the newly baptized with holy chrism (myrrh) on the forehead, eyes, nostrils, ears, lips, chest, hands, and feet, saying "The seal of the gift of the Holy Spirit." This sacrament completes baptism and grants the fullness of the Holy Spirit, enabling the person to participate fully in the life of the Church. It corresponds to the Western sacrament of Confirmation but is given to infants.

The 8th-century landowner who gave away his wealth to help the poor and needy. Celebrated on December 1st, Philaret lived in Paphlagonia and was known for his extraordinary generosity, giving away everything including his own possessions to help others. His charity was so complete that his family sometimes went without, yet God always provided. He represents radical Christian generosity.

The beloved 4th-century Archbishop of Myra, known for his generosity, miracles, and defense of Orthodox faith at the First Ecumenical Council. Celebrated on December 6th, St. Nicholas is patron of sailors, children, and the falsely accused. His popularity spans all Orthodox jurisdictions and he's remembered for secretly providing dowries for poor families.