Explore 27 May

Explore 27 May: Peter the Great founds a fortress city on the Neva, Japan’s fleet destroys Russia’s in the Tsushima Strait, Australians vote overwhelmingly to change their constitution and an American president lays a wreath in Hiroshima. Born today: Ibn Khaldun, Christopher Lee and Yasuhiro Nakasone.

This day through time →13 verified events across 5 eras

The Peter and Paul Fortress on Hare Island in the Neva, the first building of St Petersburg
The Peter and Paul Fortress on Hare Island in the Neva, the first building of St Petersburg
Image creditGodot13 · CC BY-SA 4.0Resized and cropped for display.

Peter the Great lays the first stones of St Petersburg

In the spring of 1703, early in the Great Northern War, Russian troops seized the Swedish positions at the mouth of the river Neva, giving Peter I a foothold on the Gulf of Finland. To hold it he needed a stronghold, and on 27 May (16 May in the Old Style calendar Russia then used) work began on an earth and timber fortress on little Hare Island in the Neva delta.

The fortress took its name from the saints Peter and Paul, and the settlement that grew around it became St Petersburg. Peter drove the building on at great human cost, drafting labourers from across the country, and within a decade he had made the marshy port his capital. Rebuilt in stone, the fortress still stands at the heart of the city, whose birthday is celebrated every 27 May.

Read the full storyHistory & Timeline →Source: State Museum of the History of St Petersburg: Peter and Paul Fortress, history ↗
Admiral Tōgō, inset, above his flagship Mikasa leading the Japanese battle line, on a commemorative card of about 1905
Admiral Tōgō, inset, above his flagship Mikasa leading the Japanese battle line, on a commemorative card of about 1905
Image creditImperial Japanese Navy · Public domainResized and cropped for display.

Japan destroys Russia’s fleet in the Tsushima Strait

After Russia’s Pacific squadron was trapped at Port Arthur, the tsar sent his Baltic Fleet on an epic voyage of some 18,000 miles around Africa and across the Indian Ocean. Under Admiral Zinovy Rozhestvensky it headed for Vladivostok, and on the morning of 27 May 1905 Japanese scouts spotted it entering the Tsushima Strait between Korea and Japan.

Admiral Tōgō Heihachirō was waiting. Turning his battle line across the path of the Russian columns, he brought his guns to bear with devastating effect, and over two days almost the whole Russian fleet was sunk, captured or scattered. The defeat pushed Russia towards peace talks, and the world took note that an Asian power had beaten a European one at sea.

Read the full storyHistory & Timeline →Source: Britannica: Tōgō Heihachirō ↗
A 1967 campaign badge urging Australians to vote 'Yes' for Aboriginal people, in the collection of Museums Victoria
A 1967 campaign badge urging Australians to vote ‘Yes’ for Aboriginal people, in the collection of Museums Victoria
Image creditSource: Museums VictoriaPhotographer: Jon Augier · CC BY 4.0Resized and cropped for display.

Australians vote to change the constitution for First Nations people

Australia’s constitution of 1901 said that Aboriginal people were not to be counted when working out the population, and it barred the federal parliament from making special laws for them, leaving that to the states. For a decade First Nations activists and their supporters campaigned, gathering petitions across the country, to have those words removed.

On 27 May 1967 voters were asked whether to make the change, and almost 91 per cent said yes, the largest majority ever recorded in an Australian referendum. Both major parties had backed it, so no official ‘No’ case was put. The amendment became law that August, and the vote is remembered as a landmark in the long struggle for Indigenous rights.

Read the full storyHistory & Timeline →Source: National Museum of Australia: Indigenous referendum ↗
General Cemal Gürsel, who headed the National Unity Committee after the coup, photographed in 1960
General Cemal Gürsel, who headed the National Unity Committee after the coup, photographed in 1960
Image creditTHA · CC0Resized and cropped for display.

Turkey’s army overthrows the elected government

Adnan Menderes’s Democrat Party had swept to power in Turkey’s first freely contested election in 1950, but by the late 1950s it was curbing the press and the opposition, and student protests were met with martial law. Many army officers, who saw themselves as guardians of Atatürk’s republic, decided to act.

In the early hours of 27 May 1960 officers and cadets from the war colleges in Istanbul and Ankara seized power in an almost bloodless coup. President Celâl Bayar, Prime Minister Menderes and their ministers were arrested, and a National Unity Committee under General Cemal Gürsel took charge. After trials on the island of Yassıada, Menderes and two ministers were hanged in 1961, and a new constitution was adopted.

Read the full storyHistory & Timeline →Source: Britannica: Turkey, the military coup of 1960 ↗
The ruined dome of the Hiroshima Peace Memorial, left standing after the atomic bombing of 1945
The ruined dome of the Hiroshima Peace Memorial, left standing after the atomic bombing of 1945
Image creditOilstreet · CC BY 2.5Resized and cropped for display.

A serving American president visits Hiroshima

For seventy years no sitting president of the United States had gone to Hiroshima, the city destroyed by an American atomic bomb in August 1945. On 27 May 2016, at the end of a G7 summit in Japan, Barack Obama arrived at the Peace Memorial Park with Prime Minister Shinzō Abe, toured the museum and laid a wreath at the memorial cenotaph.

In a short speech Obama spoke of the morning when ‘death fell from the sky’ and called for a world without nuclear weapons, though he offered no apology. He then met survivors of the bombing, known in Japan as hibakusha, before leaving the city. The visit was seen on both sides of the Pacific as a powerful gesture of remembrance between former enemies.

Read the full storyHistory & Timeline →Source: Ministry of Foreign Affairs of Japan: The President of the United States visits Hiroshima ↗
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PEOPLE

Born Today

Ibn Khaldun
Image creditReda Kerbush · CC BY-SA 4.0Resized and cropped for display.

Ibn Khaldun

Historian and thinker born in Tunis whose Muqaddimah offered one of the earliest attempts to explain the rise and fall of societies without religious reasoning.

Georges Rouault
Image creditAnonymousUnknown author · Public domainResized and cropped for display.

Georges Rouault

French painter and printmaker whose glowing colours and heavy black outlines owed much to his early training restoring medieval stained glass.

John Cockcroft
Image creditNobel foundation · Public domainResized and cropped for display.

John Cockcroft

English physicist who, with Ernest Walton, split lithium nuclei with an accelerator in 1932 and shared the 1951 Nobel Prize in Physics.

Vincent Price
Image creditNBC Television · Public domainResized and cropped for display.

Vincent Price

American actor with a velvety, menacing voice who became one of cinema’s best-loved horror stars in films such as House of Wax.

Yasuhiro Nakasone
Image credit内閣官房内閣広報室 · CC BY 4.0Resized and cropped for display.

Yasuhiro Nakasone

Japanese prime minister from 1982 to 1987 who built closer ties with the United States as Japan became the world’s largest creditor nation.

Christopher Lee
Image creditManfred Werner - Tsui · CC BY-SA 3.0Resized and cropped for display.

Christopher Lee

English actor famed as Dracula in Hammer horror films and, late in a long career, as Saruman in The Lord of the Rings.

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IDEAS THAT CHANGED THINGS

Firsts, Science & Discoveries

The NC-4 flying boat at New Orleans during its tour of the United States after the Atlantic crossing, 1919
The NC-4 flying boat at New Orleans during its tour of the United States after the Atlantic crossing, 1919
Image creditJohn T. Mendes · Public domainResized and cropped for display.

A US Navy flying boat completes the first flight across the Atlantic

In May 1919 the United States Navy set out to prove that an aircraft could cross the Atlantic. Three big Curtiss flying boats, NC-1, NC-3 and NC-4, left Rockaway, New York, on 8 May and hopped north to Newfoundland before striking out for the Azores, guided by a chain of navy ships strung across the ocean. Fog and heavy seas forced two of them down, and only NC-4 made it.

Commanded by Lieutenant Commander Albert C. Read, NC-4 took off from the Azores on 27 May and, after nearly ten hours in the air, landed on the river Tagus at Lisbon that evening, becoming the first aeroplane to fly across the Atlantic. It went on to Plymouth a few days later. Alcock and Brown’s non-stop crossing followed within three weeks.

Read the full storyHistory & Timeline →Source: Naval History and Heritage Command: NC-4’s Transatlantic Crossing ↗
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SPORTING HISTORY

Sporting Moments

The Stadio Olimpico in Rome, where the 2009 Champions League final was played
The Stadio Olimpico in Rome, where the 2009 Champions League final was played
Image creditMessapi, cropped by Blackcat · CC BY-SA 4.0Resized and cropped for display.

Barcelona beat Manchester United in Rome to crown a treble

The 2009 Champions League final in Rome’s Stadio Olimpico brought together the holders, Manchester United, and a Barcelona side in its first season under a young coach, Pep Guardiola. United hoped to become the first club to retain the trophy in the Champions League era, while Barcelona had already won Spain’s league and cup.

United started strongly, but after ten minutes Samuel Eto’o cut inside and scored, and Barcelona took control with their quick passing game. With twenty minutes left, Xavi crossed and Lionel Messi, the smallest man on the pitch, headed in the second. The 2-0 win gave Barcelona their third European Cup and the first treble in Spanish football.

Read the full storyHistory & Timeline →Source: UEFA: Barcelona 2-0 Man Utd, 2009 final ↗
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MUSIC • FILM • BOOKS • CULTURE

Culture Stories

An opening-day ticket for the Century of Progress world's fair in Chicago, 1933
An opening-day ticket for the Century of Progress world’s fair in Chicago, 1933
Image creditA Century of Progress International Exposition (ticket); image by Centpacrr · Public domainResized and cropped for display.

Chicago’s world’s fair is switched on by starlight

In the depths of the Great Depression, Chicago staged its second world’s fair to mark a hundred years since the city’s founding and to celebrate science and industry. The Century of Progress Exposition filled a long stretch of lakefront with bold Art Deco pavilions in bright colours, a sharp contrast to the classical white city of the 1893 fair.

On 27 May 1933 a parade wound down Michigan Avenue to Soldier Field for the formal opening. That evening, light from the star Arcturus, which had set out around the time of the 1893 fair, was caught by telescopes, turned into an electric signal and used to switch on the fair’s lights. Millions of visitors came, and the fair was so popular it reopened in 1934.

Read the full storyHistory & Timeline →Source: Chicago History Museum: Arcturus and Art Deco, the opening of the 1933 World’s Fair ↗
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LIVES REMEMBERED

Remembered Today

Simeon I of Bulgaria
Image creditNikolai Karaneschev · CC BY 3.0Resized and cropped for display.

Simeon I of Bulgaria

Bulgarian ruler educated in Constantinople who made his court at Preslav a centre of Slavonic learning and took the title of tsar.

John Calvin
Image creditAnonymous (France)Unknown author · Public domainResized and cropped for display.

John Calvin

French Protestant reformer whose teaching in Geneva and book the Institutes of the Christian Religion shaped Reformed churches worldwide.

John Howard Northrop
Image creditUnknown author · Public domainResized and cropped for display.

John Howard Northrop

American biochemist who crystallised digestive enzymes such as pepsin, showing they were proteins, and shared the 1946 Nobel Prize in Chemistry.

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AROUND THE WORLD

Observances & Anniversaries

Children at a public school in Anchau, Kaduna State, playing during their break
Children at a public school in Anchau, Kaduna State, playing during their break
Image creditBenjamin Egbodo · CC BY-SA 4.0Resized and cropped for display.

Children’s Day in Nigeria

Nigeria traditionally sets aside 27 May as Children’s Day, a day to celebrate the country’s young people and to remind the nation of their rights to health, education and protection. Schoolchildren usually have the day off, and there are parades, march-pasts, parties and outings across the country, with the president addressing the nation’s children.

In 2026 the government marked the day on 25 May because 27 May fell during the Eid al-Adha public holiday. Organisations such as UNICEF use the occasion to call for action on child welfare, including the safety of pupils in schools.

Source: State House Nigeria: President Tinubu’s speech on Children’s Day, 27 May 2025,https://statehouse.gov.ng/press-releases/president-tinubus-speech-on-childrens-day-may-27th-2025/ ↗
HISTORY & TIMELINE

Finished the highlights?

Follow 27 May chronologically, from the Middle Ages to the modern day, with 13 verified events and the sources behind them.

This day through time →