The Week of Prayer for Christian Unity is traditionally observed from the 18th to the 25th January – the octave of St. Peter and St. Paul.
Resources from Churches Together in Britain & Ireland are available to download. Materials have been prepared by the Monastic Community of Grandchamp in Switzerland
https://ctbi.org.uk/resources-for-week-of-prayer-for-christian-unity-2021/
For 2021, due to the coronavirus pandemic, CTBI are making the resources available to download only and printed versions will not be available to order.