Changes in Ecclesiastical Jurisdictionsin Mongolia | ![]() |
| Date | Change |
| 1922.03.14 | Mission sui juris of Outer Mongolia 外蒙 was established (from Apostolic Vicariate of Central Mongolia 中蒙古) |
| 1924 | Mission sui juris of Outer Mongolia 外蒙 was renamed as Mission sui juris of Urga 庫倫 |
| 2002.04.30 | Mission sui juris of Urga 庫倫 was promoted as Apostolic Prefecture of Ulaanbaatar |
Last updated on 2025.09.19
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