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Events on Sunday 12 December 1666 1
1666Great Moscow Synod deposes Patriarch NikonRussian Orthodox council strips Nikon of his office and exiles himA church council convened in Moscow with the participation of visiting Eastern patriarchs stripped Patriarch Nikon of his office and banished him to a remote monastery. The same synod condemned the Old Believers who rejected Nikon's earlier liturgical reforms, deepening the schism known as the Raskol.