The bitter quarrel over the calendar led to one of the earliest schisms between the Eastern Orthodox Church and the Church of Rome. The Eastern Christians, holding to the lunar calendar, continued to observe Easter on the fourteenth day of the lunar month, regardless of the day of the week. At the very first ecumenical (worldwide) council of the Christian Church, held at Nicaea in Asia Minor in 325, one of the world-unifying questions to be decided was the date of Easter. A uniform date was fixed in such a way as both to stay with the traditional lunar calendar and to assure that Easter would
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