Michaelmas Festival in the Church, Parish Hall, Atrium & Back Parking Lot In the fifth century, a basilica near Rome was dedicated in honour of Saint Michael the Archangel on 30 September, beginning with celebrations on the eve of that day. 29 September is now kept in honour of Saint Michael and all Angels throughout some western churches. The name Michaelmas comes from a shortening of "Michael's Mass", in the same style as Christmas (Christ's Mass) and Candlemas (Candle Mass, the Mass where traditionally the candles to be used throughout the year would be blessed).