1303
Battle of Marj al-Saffar
Battle · Middle East
On this day
340 events in the atlas are dated to 20 April, from 79 CE to 2026. The best known come first; below them is every one, age by age, the most significant first.
1303
Battle · Middle East
1792
War · Europe · 1792 – 1802
1809
Battle · Europe
1999
Attack · North America
2010
Natural disaster · North America
2012
Accident · South Asia
Each event is listed under the date its sources give, as its page shows it. Before 1582, and in some countries later (Britain until 1752, Russia until 1918), that is a date of the Julian calendar, as on Wikipedia’s pages for each day.