Changes in Ecclesiastical Jurisdictions in Svalbard and Jan Mayen

Date	Change
1931.04.08	Mission sui juris of Northern Norway was established (from Apostolic Vicariate of Norway)
1944.03.10	Mission sui juris of Northern Norway was promoted as Apostolic Prefecture of Northern Norway
1955.02.18	Apostolic Prefecture of Northern Norway was promoted as Apostolic Vicariate of Northern Norway
1979.03.28	Apostolic Vicariate of Northern Norway was promoted as Territorial Prelature of Tromsø (without ecclesiastical province)