Wikipedia:Selected anniversaries/January 1
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This is a list of selected January 1 anniversaries that appears on 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 may be controversial, or on a day that is or soon will be on the Main Page, please post your suggestion on the talk page instead.
To report an error when this appears on the Main Page, see Main Page errors.- 1801 – Italian astronomer Giuseppe Piazzi (pictured) discovered the dwarf planet Ceres, naming it after the Roman goddess of growing plants.
- 1801 – The Kingdom of Ireland formally merged with the Kingdom of Great Britain, adding St. Patrick's saltire to the Union Flag.
- 1808 – As a result of the lobbying efforts by the Abolitionist Movement, the importation of slaves into the United States was officially banned.
- 1901 – The British colonies of New South Wales, Queensland, South Australia, Tasmania, Victoria, and Western Australia federated as the Commonwealth of Australia.
- 1995 – The World Trade Organization, the international organization designed to supervise and liberalize international trade, came into being to replace the General Agreement on Tariffs and Trade.
More events: December 31 – January 1 – January 2

