The Week of Prayer for Christian Unity, celebrated worldwide from 18-25 January, is being hosted this year by the Council of Christian Churches in Germany (Arbeitsgemeinschaft Christlicher Kirchen in Deutschland / ACK). As 2017 marks the commemoration of the Reformation, the week of prayer will reflect on the legacy of the Reformation and the current spirit of reconciliation in Christ. You can find more information and material here in English or German.