On this day in history
What happened on 23 September
3 events from Bangladesh and around the world took place on 23 September. Use the arrows to move a day at a time, or filter by category.
- First map of Mars was madeScience
- Neptune was discovered by Johann GalleScience
- Saudi Arabia National Day — Kingdom was unifiedWorld
About these entries
Each date lists a handful of events chosen for their lasting importance: milestones in the history of Bangladesh and Bengal, turning points in world affairs, and landmarks in culture and science. Years follow the Gregorian calendar.
Bangladesh dates are given as they are observed in the country. Where a historical source disagrees on a day, the most widely cited date is used.