What happened on 21 December?

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

1. 1937 Snow White and the Seven Dwarfs First full-length animated Disney feature; reshaped popular cinema.
2. 1988 Lockerbie bombing Pan Am 103 blown up over Scotland by Libyan agents.
3. 2015 SpaceX lands a first-stage booster Falcon 9 returns and lands intact, demonstrating reusable orbital rockets.
4. 1977 Born: Emmanuel Macron Centrist president of France from 2017; founded La République En Marche.
5. 1879 Ibsen's A Doll's House Founding play of modern realist drama - Nora's slamming door.