On April 30, 1789, George Washington is sworn in as the first American president and delivers the first inaugural speech at Federal Hall in New York City. Elements of the ceremony set tradition; presidential inaugurations have deviated little in the two centuries since Washington’s inauguration. In front of 10,000 spectators, Washington appeared in a plain […]

On April 30, 1859, the first chapter of Charles Dickens’ serialized novel, A Tale of Two Cities, is published in Dickens’ circular, All the Year Round. It rolls out over 31 weekly installments, with the last one appearing that November. Dickens was born in 1812 and attended school in Portsmouth. His father, a clerk in […]

On April 30, 1897, British physicist J.J. Thomson announced his discovery that atoms were made up of smaller components. This finding revolutionized the way scientists thought about the atom and had major ramifications for the field of physics. Though Thomson referred to them as “corpuscles,” what he found is more commonly known today as the […]

On April 30, 1917, the so-called Battle of the Boot marks the end of the British army’s Samarrah Offensive, launched the previous month by Anglo-Indian forces under the regional commander in chief, Sir Frederick Stanley Maude, against the important Turkish railroad at Samarra, some 130 kilometers north of Baghdad, in Mesopotamia (modern-day Iraq). Fresh from […]

The Land Rover, a British-made all-terrain vehicle that will earn a reputation for its use in exotic locales, debuts at an auto show in Amsterdam on April 30, 1948. The first Land Rover, known as the Series 1, was the brainchild of Maurice Wilks, the head designer for the British car company Rover, of which […]

On April 30, 1977, more than 2,000 protesters occupy the Seabrook Nuclear Power Plant construction site in New Hampshire; 1,414 of these activists are arrested in what becomes one of the largest mass arrests in American history. Anti-nuclear demonstrators set up tents and toted signs reading “Split Wood, Not Atoms” and “Go Fishing, Not Fission” […]

On April 30, 1993, four years after publishing a proposal for “an idea of linked information systems,” computer scientist Tim Berners-Lee releases the source code for the world’s first web browser and editor. Originally called Mesh, the browser that he dubbed WorldWideWeb becomes the first royalty-free, easy-to-use means of browsing the emerging information network that […]

On April 30, 1997, at exactly 12:11 pm, London’s iconic Big Ben clock stops ticking. For 43 minutes, the most famous clock in the world, which strikes the note of E every hour, failed to keep time. According to Britain’s Daily Telegraph, engineers traced the problem to the mechanism that controls the hands on the […]

On April 30, 2019, Japan’s 85-year-old Emperor Akihito steps down from the throne, becoming the first Japanese monarch to abdicate in over 200 years. Akihito was born on December 23, 1933, the eldest son of Emperor Hirohito, who had ruled Japan since 1926. Akihito was born two years after the Japanese invasion of Manchuria, the […]