Emperor Tenji's Rokoku Water Clock: Timekeeping Revolution (+ 9 more historical events on this day!)
A Daily Dose of History: Events on this Day in History
- Published
- June 10, 2026
- Duration
- 7:00
- Summary source
- description
- Last updated
- Jul 5, 2026
Discusses A Daily Dose of History (10 Jun 2026) Today's historical events: Emperor Tenji of Japan introduces a…
Summary
A Daily Dose of History (10 Jun 2026) Today's historical events: Emperor Tenji of Japan introduces a water clock (clepsydra) called Rokoku. The instrument, which measures time and indicates hours, is placed in the capital of Ōtsu. Third Crusade: Frederick I Barbarossa drowns in the river Saleph while leading an army to Jerusalem. The Battle of Pelekanon r…
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Show notes
A Daily Dose of History (10 Jun 2026) Today's historical events: Emperor Tenji of Japan introduces a water clock (clepsydra) called Rokoku. The instrument, which measures time and indicates hours, is placed in the capital of Ōtsu. Third Crusade: Frederick I Barbarossa drowns in the river Saleph while leading an army to Jerusalem. The Battle of Pelekanon results in a Byzantine defeat by the Ottoman Empire. Copenhagen is surrounded by the army of Frederick I of Denmark, as the city will not recogn