St. Pierre Chanel Day honors Saint Peter (Pierre) Chanel, the first martyr of Oceania and the patron saint of Oceania and missionary work. The day is especially significant in Wallis and Futuna, a French overseas collectivity in the South Pacific, where he was martyred in 1841.

Gospel Day in Tuvalu commemorates the arrival of Christianity to the islands through the work of Samoan and British missionaries in the mid-19th century, which played a major role in shaping Tuvalu's spiritual, social, and cultural identity.

St. Cyril and St. Methodius Day is a feast day celebrated in honor of the Apostles to the Slavs, Saints Cyril and Methodius. It commemorates their missionary work, cultural contributions and role in spreading Christianity among the Slavic peoples.

Ascension Day, also known as the Feast of the Ascension, is a Christian holy day celebrated 40 days after Easter Sunday, commemorating the ascension of Jesus Christ into heaven. It marks the end of Christ’s earthly ministry and His return to the Father, as described in the Acts of the Apostles and the Gospel of Luke.

Orthodox Ascension Day commemorates Jesus Christ’s ascension into heaven, marking the end of His earthly ministry and His exaltation at the right hand of the Father.

Pentecost, also known as Whit Sunday, is one of the most significant feast days in the Christian calendar. It commemorates the descent of the Holy Spirit upon the Apostles and other followers of Jesus. This event is often referred to as the birth of the Christian Church because it marks the beginning of the Apostles' public ministry to spread the Gospel.

Orthodox Pentecost is one of the Great Feasts of the Eastern Orthodox Church. It commemorates the descent of the Holy Spirit upon the Apostles, marking the fulfillment of Christ's promise to send the Spirit to guide and empower the Church. Orthodox Pentecost is rich in theological significance, liturgical traditions, and cultural customs.

Pentecost Monday, also known as Whit Monday, is the day following Pentecost Sunday, celebrated by Christians to continue the commemoration of the descent of the Holy Spirit upon the Apostles. It is recognized in many parts of the world.

Orthodox Pentecost Monday is part of the Afterfeast of Pentecost, continuing the celebration of the descent of the Holy Spirit upon the Apostles. It is a day of significant liturgical and cultural importance in Eastern Orthodoxy, marked by prayers, traditions and community gatherings that honor the work of the Holy Spirit and the revelation of the Holy Trinity.