966 CE
Christianization of Poland
Event
On this day
350 events in the atlas are dated to 14 April, from 43 BCE to 2026. The best known come first; below them is every one, age by age, the most significant first.
966 CE
Event
1471
Battle · Europe
1619
Battle · East Asia
1864
War · 1864 – 1866
1912
Accident
2014
Natural disaster · Sub-Saharan Africa
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.