Russia Orthodox Believers Attend Mass For Christmas Which Falls On Jan. 7

Russian Orthodox believers attend the Christmas Mass at the Christ the Savior Cathedral in Moscow, Russia, early Monday, Jan. 7, 2013. Christmas falls on Jan. 7 for Orthodox Christians in the Holy Land, Russia and other Orthodox churches that use the old Julian calendar instead of the 16th-century Gregorian calendar adopted by Catholics and Protestants and commonly used in secular life around the world. <AP/NEWSis/Ivan Sekretarev>

A Russian Navy cadet attends an Orthodox Christmas service at an Orthodox Church in St. Petersburg, Russia, Sunday, Jan. 6, 2013. <AP/NEWSis/Dmitry Lovetsky>