Ad orientem
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Ad orientem, meaning "to the east" in Ecclesiastical Latin, is a phrase used to describe the eastward orientation of Christian prayer and Christian worship, comprising the preposition ad (toward) and oriens, participle of orior.
Tridentine Mass, celebrated regularly ad orientem
A Christian cross hanging on the eastern wall of a modern house, indicating the eastward direction towards which prayer is focused
Eastern Orthodox Christian pilgrims making prostrations at Golgotha in the Church of the Holy Sepulchre, Jerusalem
Fixed prayer times
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Fixed prayer times, praying at dedicated times during the day, are common practice in major world religions such as Judaism, Christianity, and Islam.
Jews stop to pray Maariv (evening prayer) while at a Tel Aviv flea-market shop
Image: Agpeya Breviary
Image: Shehimo Breviary