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The Protestant Church in the Netherlands (Dutch: de Protestantse Kerk in Nederland, abbreviated PKN) is the largest Protestant denomination in the Netherlands, being both Calvinist and Lutheran. It was founded on 1 May 2004 as the merger of the vast majority of the Dutch Reformed Church, the vast majority of the Reformed Churches in the Netherlands, and the Evangelical Lutheran Church in the Kingdom of the Netherlands. The merger was the culmination of an organizational process started in 1961. Several orthodox Reformed and liberal churches did not merge into the new church.