Cipher seals

  1. 42
  2. 69
  3. 420
  4. 690

Quiet field

769

The year was full. This aperture was quiet.

In 769 Charles (later called Charlemagne) and his brother Carloman still divided the Frankish inheritance of 768. Aquitaine rebelled. In the Abbasid east and Tang China, other courts ran other years. No instrument cluster appears.

  • Frankish joint rule and Aquitanian revolt
  • Abbasid Baghdad after al-Mansur’s founding (762)
  • Tang after the An Lushan shock
  • Nara Japan

The aperture

Quiet. Charlemagne’s sole rule is 771. Do not slide it.

Regions checked

  • Europe
  • Middle East (Abbasid)
  • East Asia (Tang)
  • Africa
  • the Americas

Included / excluded

  • Excluded: Charlemagne as sole king. Carloman died in 771. Treating 769 as Charlemagne’s year would be a miss.

68 | 69 | 70

Same century. Same research threshold. Matched frames. Neither pane brighter except that the middle year is the selected aperture.

768

Neighbor

Death of Pepin. The division of the kingdom is 768, the neighbor.

769

Aperture

Quiet. Charlemagne’s sole rule is 771. Do not slide it.

770

Neighbor

Still joint Frankish rule.