Chōkyū

Change of era

• 1040 Chōkyū gannen: The new era name was created to mark an event or series of events. The previous era ended and the new one commenced in Chōryaku 4, on the 10th day of the 11th month of 1040.

  Events of the ''Chōkyū'' era

• 1040 : a partial eclipse of the sun, predicted for midday, occurred in mid-afternoon, causing complaints about the astronomers' lack of accuracy.
• 1040 : The Sacred Mirror was burned in a fire.
• 1041 : The Sanjo Palace burned; and it was reconstructed.