This is a list of selected May 31 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.
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Blurb | Reason |
---|---|
; Mother's Day in Algeria, France, Morocco and Sweden (2015) | refimprove |
1279 BC – Ramesses II became Pharaoh of Egypt. | refimprove section |
1669 – Citing poor eyesight, Samuel Pepys recorded his last entry in his diary, one of the most important primary sources for the English Restoration period. | refimprove section |
1889 – The South Fork Dam near Johnstown, Pennsylvania, failed, unleashing a torrent of 18.1 million cubic meters (4.8 billion gallons) of water that killed over 2,200 people. | refimprove section |
1910 – The South Africa Act came into force, uniting four colonies into the Union of South Africa, exactly 51 years before it became the Republic of South Africa. | Act: unreferenced section; Union: refimprove section |
1916 – The German High Seas Fleet and British Grand Fleet clashed in the Battle of Jutland, the largest naval battle of the First World War. | refimprove section |
1970 – The Ancash earthquake devastated various coastal towns in Peru and resulted in a massive avalanche on the north side of Nevado Huascarán, burying the town of Yungay. | refimprove |
2010 – During an attempt to break the ongoing blockade of the Gaza Strip, the Israeli Navy engaged in armed conflict with the crew of the MV Mavi Marmara, resulting in nine civilian deaths. | Raid: neutrality issues, expansion; Mavi Marmara: multiple issues |
May 31: World No Tobacco Day; Feast of the Visitation (Catholicism and Anglicanism)