1944-OCT-23

Polity Timeline
OSHIMA-IZU

Flag or logo changes:

1900-01-01:

OSHIMA ISLAND Government Office [Izu Islands]

(Oshima)

- IZU-OSHIMA ISLANDS

1945-09-02:

OSHIMA Subprefecture

(Oshima)

- OSHIMA-IZU

1952-04-29:

OSHIMA Subprefecture

(Oshima)

- OSHIMA-IZU

1957-08-01:

OSHIMA Subprefecture

(Oshima)

- OSHIMA-IZU

Emblem or Symbol changes:

1900-01-01:

OSHIMA ISLAND Government Office [Izu Islands]

(Oshima)

- IZU-OSHIMA ISLANDS

1943-11-02:

OSHIMA Subprefecture

(Oshima)

- OSHIMA-IZU

1945-09-02:

OSHIMA Subprefecture

(Oshima)

- OSHIMA-IZU

1945-10-25:

OSHIMA Subprefecture

(Oshima)

- OSHIMA-IZU

1957-08-01:

OSHIMA Subprefecture

(Oshima)

- OSHIMA-IZU

1964-10-01:

OSHIMA Subprefecture

(Oshima)

- OSHIMA-IZU

Sovereignty changes:

1900-01-01:

JAPAN

1945-09-02:

JAPAN +

AMERICA +

1952-04-29:

JAPAN

Capital Local Name changes:

1900-01-01:

Ōshima

Local Name of Polity changes:

1900-01-01:

ŌSHIMA

Status changes:

1900-01-01:

OSHIMA ISLAND Government Office [Izu Islands]

1926-01-01:

OSHIMA Subprefecture

Ruler changes:

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UPDATED ON: ~ 2025-AUG-28 ~ .