where January is a vacation time, churches often find other days to celebrate the week of prayer, for example around Pentecost (as originally suggested by the Faith and Order movement in 1926, and Pope Leo XIII in 1894), which is also a symbolic date for the unity of the church.

The 2008 Week of Prayer for Christian Unity was celebrated as the centennial. For 2012, was chosen with the theme "We will all be changed". The 2016 Week was provided by the Churches of