The Seder ha-Tamid, a Provençal (Nusaḥ Comtat Venaissin) siddur published in Avignon in 1766, has liturgical additions for an amazing five different local festivals — one for Avignon, and two each for Carpentras and Cavaillon. Here’s a series of texts for the twenty-fifth of Iyar in Cavaillon, commemorating the abatement of a deadly plague on 25 Iyyar 5391 (27 May 1631), including an Al haNisim of uncertain origin and a series of Biblical readings. Uniquely among the local festivals in this siddur, 25 Iyyar calls for a Torah reading not of the Song of the Sea, but the plague against Israel in Numbers 17.