Wikipedia:Selected anniversaries/January 1
This is a list of selected January 1 anniversaries that appear in the "On this day" section of the Main Page. To suggest a new item, in most cases, you can be bold and edit this page. Please read the selected anniversaries guidelines before making your edit. However, if your addition might be controversial or on a day that is or will soon be on the Main Page, please post your suggestion on the talk page instead.
Please note that the events listed on the Main Page are chosen based more on relative article quality and to maintain a mix of topics, not based solely on how important or significant their subjects are. Only four to five events are posted at a time and thus not everything that is "most important and significant" can be listed. In addition, an event is generally not posted this year if it is also the subject of the scheduled featured article or picture of the day.
To report an error when this appears on the Main Page, see Main Page errors. Please remember that this list defers to the supporting articles, so it is best to achieve consensus and make any necessary changes there first.
| ← December 31 | January 2 → |
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January 1: New Year's Day in the Gregorian calendar
- 45 BC – The Roman Republic adopted the Julian calendar.
- 1739 – Bouvet Island in the South Atlantic Ocean, the most remote island in the world, was discovered by French explorer Jean-Baptiste Charles Bouvet de Lozier.
- 1801 – Italian astronomer Giuseppe Piazzi discovered the dwarf planet Ceres (pictured), naming it after the Roman goddess of growing plants and of motherly love.
- 1892 – The immigration station on Ellis Island in New York Harbor opened, and would, over the course of its existence, process twelve million immigrants to the United States.
- 1994 – The revolutionary leftist Zapatista Army of National Liberation initiated twelve days of armed conflict in the Mexican state of Chiapas.