Changes in Ecclesiastical Jurisdictions in Czechia 🇨🇿

Date	Change
973	Diocese of Praha was established (from Diocese of Regensburg and became suffragan of Mainz)
1063	Diocese of Olomouc was established (from Diocese of Praha and became suffragan of Mainz)
1344.04.30	Diocese of Litomyšl was established (from Diocese of Praha)
1344.08.25	Diocese of Praha was promoted as Metropolitan Archdiocese of Praha (with suffragan sees Litomyšl and Olomouc)
1474	Diocese of Litomyšl was suppressed (to Metropolitan Archdiocese of Praha)
1655.07.03	Diocese of Litoměřice was established (from Metropolitan Archdiocese of Praha and became suffragan of Praha)
1664.11.10	Diocese of Hradec Králové was established (from Metropolitan Archdiocese of Praha and became suffragan of Praha)
1777.12.05	Diocese of Brno was established (from Diocese of Olomouc and became suffragan of Olomouc)
1777.12.05	Diocese of Olomouc was promoted as Metropolitan Archdiocese of Olomouc (with suffragan see Brno and lost territory to establish Diocese of Brno)
1784.02.17	Metropolitan Archdiocese of Praha lost territory to Diocese of Litoměřice
1785.09.20	Diocese of České Budějovice was established (from Metropolitan Archdiocese of Praha and became suffragan of Praha)
1863	Diocese of Brno exchanged territory with Metropolitan Archdiocese of Olomouc
1863	Metropolitan Archdiocese of Olomouc exchanged territory with Diocese of Brno
1947	Apostolic Administration of Český Těšín was established (from Metropolitan Archdiocese of Wrocław)
1970	Titular Episcopal See of Litomyšl was restored
1972.06.28	Diocese of Hradec Králové lost territory to Metropolitan Archdiocese of Wrocław
1972.06.28	Metropolitan Archdiocese of Olomouc lost territory to Diocese of Opole
1972.06.28	Metropolitan Archdiocese of Praha lost territory to Metropolitan Archdiocese of Wrocław
1978.05.31	Apostolic Administration of Český Těšín was suppressed (to Metropolitan Archdiocese of Olomouc)
1993.05.31	Diocese of Hradec Králové lost territory to Diocese of České Budějovice
1993.05.31	Diocese of Litoměřice exchanged territory with Metropolitan Archdiocese of Praha
1993.05.31	Diocese of Plzeň was established (from Metropolitan Archdiocese of Praha, Diocese of České Budějovice and Diocese of Litoměřice and became suffragan of Praha)
1993.05.31	Metropolitan Archdiocese of Praha exchanged territory with Diocese of České Budějovice and Diocese of Litoměřice
1993.05.31	Diocese of České Budějovice exchanged territory with Metropolitan Archdiocese of Praha
1996.01.18	Apostolic Exarchate of Czech Republic (Ruthenian Rite) was established (from Diocese of Prešov)
1996.05.30	Diocese of Ostrava–Opava was established (from Metropolitan Archdiocese of Olomouc and became suffragan of Olomouc)