Template:OpenHistoricalMap/On this day/04/30
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- 1803
- The United States purchases Louisiana from France.
- 1891
- The municipality of Venâncio Ayres (now Venâncio Aires) is established in Rio Grande do Sul, Brazil.
- 1894
- Roma San Pietro station opens in Rome.
- 1950
- Northwestern Arizona is moved from the Pacific Time Zone to the Mountain Time Zone at 2 o’clock in the morning, putting the entire state in the same time zone for the first time.
- 1975
- In the Vietnam War, the Republic of South Vietnam is proclaimed as South Vietnam and its capital, Saigon, fall to Communist forces.
- 2015
- Joshin Super DenDen Land opens in Osaka.
This is a selection of establishments and disestablishments on April 30, based on OpenHistoricalMap data, that automatically appears on the OpenHistoricalMap page on April 30 of each year. This list highlights important changes in the world, as well as more mundane events that demonstrate the project's ambitious tendency toward micromapping history.
Contributing
We appreciate your help in curating these events from OpenHistoricalMap data. Items should be based on fully qualified start_date=* and end_date=* tags, plus any other metadata tagged on features in OpenHistoricalMap. To the extent possible, the list should feature a wide range of years and include events from different continents.