Chiba-shi(12201) shifts to a city designated by the Cabinet Order, and it becomes Chiba-shi(12100).

千葉市(12201)の千葉市(12100)への政令指定都市施行

342

http://data.e-stat.go.jp/lod/terms/sacs#CodeChangeEvent

http://data.e-stat.go.jp/lod/sac/C12100-19920401

http://data.e-stat.go.jp/lod/sac/C12201-19900601

http://data.e-stat.go.jp/lod/sac/C12201-19920401

http://data.e-stat.go.jp/lod/sacr/shiftToDesignatedCity

1992-04-01 ^^http://www.w3.org/2001/XMLSchema#date