Ex qua die arcano

Ex qua die arcano is the incipit of the 4 March 1853 apostolic letter by which Pope Pius IX decreed the reestablishment of the episcopal hierarchy in the Netherlands.[1] Through it, the administrative area formerly known as the Dutch Mission was divided into dioceses. Utrecht was raised, once more, to a Roman Catholic archdiocese, and received the four suffragan dioceses of Haarlem, 's-Hertogenbosch, Breda, and Roermond.


  1. ^ Pope Pius IX (1853-03-04). Martinis, Raffaele de (ed.). "Ex qua die arcano". Iuris pontificii de propaganda fide: pars prima, complectens bullas, brevia acta S.S. a congregationis institutione ad praesens iuxta temporis seriem disposita (in Latin). Romae: Ex Typographia Polyglotta (published 1894). 6 (1): 158–161. OCLC 3342505. Translated in   One or more of the preceding sentences incorporates text from this source, which is in the public domain: "XIIIb: the apostolic letters of the most holy Lord Pius IX, by Divine Providence, pope, by which letters the episcopal hierarchy was re-established in Holland". Further papers regarding the relation of foreign states with the Court of Rome: presented to the House of Commons by command of Her Majesty, in pursuance of their address of June 14, 1853. London: Harrison and Son. 1853. pp. 61–65. OCLC 80498785.