On this day in history
December 20
IslamicScience
Observed on December 20, 2026
- Fast of TevetJewish
The Fast of the 10th of Tevet, recalling the start of the Babylonian siege of Jerusalem.
- 1873 CEIslamic · born
Mehmet Akif Ersoy, the poet who wrote the lyrics of Turkey's national anthem, was born in Istanbul.
- 1951 CEScience
At a test station in Idaho, Experimental Breeder Reactor I produced the first usable electricity from nuclear energy, lighting four bulbs and inaugurating nuclear power generation.