A Daily Dose of History: Events on this Day in History

Justinian's Hagia Sophia: Iconic Byzantine Structure (+ 10 more historical events on this day!)

Published: February 23, 2026

Duration: 7:55

A Daily Dose of History (23 Feb 2026)

Today's historical events:

Byzantine emperor Justinian I lays the foundation stone of a new Orthodox Christian basilica in Constantinople – the Hagia Sophia. Khosrow II, last Sasanian shah of Iran, is overthrown. Empress Wu Zetian abdicates the throne, restoring the Tang dynasty. Traditionally the date of publication of the Gutenberg Bible, the first Western book printed with movable type. Berbice slave uprising in Guyana: The first major slave revolt in South America. American Revolutionary War: Baron von Steuben arrives at Valley Forge, Pennsylvania, to help to train the Continental Army. Cato St...