657 CE
Battle of Siffin
Battle · Middle East
On this day
312 events in the atlas are dated to 21 July, from 365 CE to 2025. The best known come first; below them is every one, age by age, the most significant first.
657 CE
Battle · Middle East
1774
Treaty · Europe
1861
Battle · North America
1942
War · Oceania
1995
Event · East Asia · 1995 – 1996
2005
Attack · Europe
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.