Orthodox Christians around the world celebrate Christmas by attending church services.
While the majority of the Christian world celebrates Christmas on December 25, many of the world's 200 million Orthodox Christians celebrate the birth of Jesus Christ on January 7.
This is because they follow the Julian calendar, unlike Christian denominations that follow the Gregorian calendar.
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A woman in the Syrian capital, Damascus, receives Holy Communion at the Saint Sarkis Armenian Apostolic Church. This is the first Christmas that Syrians have celebrated since the fall of their long-time ruler, former President Bashar al-Assad.
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In Egypt, a priest representing the Coptic Orthodox Church – the largest Christian denomination in the Middle East – walks past worshipers at the Archangel Michael Coptic Orthodox Church in Cairo.
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A young worshiper lights a candle during Orthodox Christmas Eve celebrations in Sharjah, United Arab Emirates.
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Earlier, believers and religious leaders gathered at the Church of the Nativity in Bethlehem in the occupied West Bank, which is said to be the birthplace of Jesus Christ.
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Ethiopian worshipers hold candles and sing hymns at Bole Madhanialem Church in Addis Ababa.
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Millions of Russians celebrate Christmas and President Vladimir Putin (left) celebrates the holiday season at St. George Church in Moscow.
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Festive decorations can be seen on the streets of Moscow.
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In the Serbian capital, Belgrade, Prince Philip was photographed holding a burning oak branch, or badnjak, in a traditional ceremony.
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In the Armenian capital, Yerevan, Armenian Apostolic Christians attended a mass in the Cathedral of St. Gregory the Illuminator.
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Georgian Christians came out for a candlelight celebration in Tbilisi.