Wikipedia:Selected anniversaries/May 20
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This is a list of selected May 20 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.May 20: National Day in Cameroon; Independence Day in East Timor
- 325 – The First Council of Nicaea, the first ecumenical council of the Christian Church, was formally opened in present-day Iznik, Turkey to resolve disagreements in the Church of Alexandria over the nature of Jesus in relationship to God the Father.
- 1498 – Portuguese explorer Vasco da Gama (pictured) arrived at Calicut, India, opening up trade with the Far East directly by sea.
- 1570 – The first modern atlas, Theatrum Orbis Terrarum by cartographer Abraham Ortelius, was issued.
- 1873 – Clothing manufacturer Levi Strauss and tailor Jacob Davis were granted a patent for using copper rivets to strengthen the pockets of denim overalls, paving the way for their business Levi Strauss & Co. to start manufacturing their first line of blue jeans.
- 2002 – East Timor became the first new sovereign state of the twenty-first century after Indonesia relinquished control of the territory.