Christians of many traditions will mark the Week of Prayer for Christian Unity from Monday, January 18 to Monday, January 25, 2027, the traditional dates in the northern hemisphere. Some churches, particularly in the southern hemisphere, choose another time, such as around Pentecost.
Where it began
The observance grew out of an “Octave of Christian Unity” begun in 1908 by Father Paul Wattson in the United States. The dates were chosen to run from the feast of the Confession of St Peter (January 18) to the feast of the Conversion of St Paul (January 25).
Today the resources are prepared jointly by the Vatican’s Dicastery for Promoting Christian Unity and the World Council of Churches’ Commission on Faith and Order. Each year a different country’s churches write the materials on a chosen Bible passage.
How to take part
- Pray daily during the week for the unity of all who follow Christ, in the spirit of Jesus’ prayer in John 17.
- Join or organise a joint service with churches of other denominations in your area.
- Use the official prayer resources, published by the World Council of Churches, once the 2027 theme is released.




