Whitsunday Sunday, May 28 - Monday, May 29, 2023 The 2013 Pentecost Mass at Csíksomlyó, Romania. Pentecost, the seventh Sunday after Easter, commemorates the descent of the Holy Spirit upon Christ's disciples. Whitsunday is the Anglican name often used for Pentecost. Articles El Rocío, Spain: Joy and devotion not to be tamed Csíksomlyó pilgrimage one of largest annual gatherings in Romania