On 20 September 1498, the Nankai earthquake sent a tsunami crashing into coastal Japan, destroying the wooden hall around the Great Buddha of Kōtoku-in. The forty-foot bronze statue survived, and for over five centuries has sat in the open air without a roof. Five hundred and two years later, on the same date in 2000, someone fired a Russian-built RPG-22 anti-tank missile at the MI6 building in London. The headquarters sustained damage but no casualties, and the attack remains unsolved. Then, in 2019, thousands gathered near Area 51 in Nevada after a viral Facebook event proposed storming the classified US military facility to find aliens. Nobody stormed anything. They had a party instead. Three moments in history: one serene, one alarming, one absurd. All taking place on the same calendar date, centuries apart. Clara Vale explores the earthquake that reshaped a coastline, the rocket that struck a spy headquarters, and the internet event that became a desert festival.