It seems that Catholics are permitted to commemorate the 500 anniversary since the Reformation. Although the Catholic Church may not agree with many things that the Reformation brought about, it is an excellent opportunity for the Church to promote Christian unity. Ut Unum Sint 'That they may be one'. Praying for Christian unity is most commendable, even for us Catholics.
Pope Francis himself was at the ecumenical events in Lund and Malmö, in Sweden, on the 31st of October, 2016 as a sign for the need of Christian unity.
Pope Francis, LWF President Bishop Dr Munib A. Younan and LWF General Secretary Rev. Dr Martin Junge will lead the common prayer service in Lund and the event in Malmö in cooperation with leaders from Church of Sweden and the Catholic Diocese of Stockholm.
“There is power when communities find their way out of conflict. In Christ we are encouraged to serve together in this world. The joint commemoration is a witness to the love and hope we all have because of the grace of God,” LWF President Younan and General Secretary Junge say.
Kurt Cardinal Koch, President of the Pontifical Council for Promoting Christian Unity explains further: “By concentrating together on the centrality of the question of God and on a Christocentric approach, Lutherans and Catholics will have the possibility of an ecumenical commemoration of the Reformation, not simply in a pragmatic way, but in the deep sense of faith in the crucified and resurrected Christ.”
Bishop Anders Arborelius of the Catholic Diocese of Stockholm adds, “History will be written when Pope Francis and the LWF leaders visit Lund and Malmö to encourage all of us to go further on the road towards Christian unity.” - Preparations to commemorate 500 years since the Reformation, 01.06.2016 (Vatican Website).
Kurt Cardinal Koch (Pontifical Council for Promoting Christian Unity), Bishop Dr. Munib Younan (LWF President), Pope Franics and Rev. Dr. Martin Junge, lead the Common Prayer in Lund Cathedral on 31 October 2016. Photo: Church of Sweden/Magnus Aronson