📜 This Day in History
December 21
- 1124Lamberto Scannabecchi was elected pope, taking the name Honorius II.
- 1872HMS Challenger departed Portsmouth on a scientific expedition that laid the foundations of oceanography.
1923Nepal and the United Kingdom signed the first treaty that defined the international status of Nepal as an independent and a sovereign nation.- 1963An attempt by Greek Cypriot police to search certain Turkish Cypriot women in Nicosia escalated into island-wide violence, leading to 538 deaths and the displacement of nearly 27,000 people.
- 1988A bomb on board Pan Am Flight 103 detonated over Lockerbie, Scotland, killing 270 people.
- 2018Operatives of the British Special Boat Service boarded the container ship Grande Tema in the Thames Estuary to detain four stowaways who had threatened the crew.