What happened on 21 October?

9 events from the Ever-When timeline, ranked by how much they mattered.

1. 1600 Battle of Sekigahara Tokugawa Ieyasu defeats western daimyō coalition in a single day; clears his path to the shogunate.
2. 1805 Battle of Trafalgar Nelson destroys French-Spanish fleet off Cape Trafalgar; secures British naval supremacy for a century.
3. 1097 Siege of Antioch Crusaders take Antioch after eight-month siege; the Holy Lance discovered there inspires their breakout victory over Kerbogha's relief army.
4. 1520 Magellan finds the strait Behind a cape sighted on the feast of St Ursula opens the labyrinth Magellan promised: 350 miles of channels between glaciers, threaded in 38 days without charts. One ship deserts
5. 1904 The Dogger Bank incident Steaming through the North Sea at night, Russia's Baltic Fleet mistakes Hull's fishing trawlers for Japanese torpedo boats — six thousand miles from Japan — and opens fire, killing
6. 1966 Aberfan disaster Coal spoil tip engulfs a Welsh school, killing 116 children.
7. 1772 Born: Samuel Taylor Coleridge Lake Poet and critic; author of The Rime of the Ancient Mariner.
8. 1965 Flooding of Capel Celyn The Tryweryn valley and Welsh-speaking village of Capel Celyn are drowned to supply Liverpool with water, despite near-unanimous Welsh opposition — a lasting catalyst for Welsh nat
9. 1967 March on the Pentagon Around 100,000 anti-war protesters march on the Pentagon, a landmark of the US antiwar movement.