Lectionary logic?
September 1, in the Anglican Church of Aotearoa, New Zealand and Polynesia, is the Festival of The Builders of the Anglican Church in Aotearoa, New Zealand and Polynesia. It is usually represented in bold type (cf. old style “Red letter day”) in A New Zealand Prayer Book He Karakia Mihinare o Aotearoa [NZPB] (page 9).