Credible Theories
Place · Real place

Constantinople

The Byzantine capital where Procopius recorded that in 536 the sun shone without brightness for a whole year.

330–1453 CE
Founded
330 CE by Constantine I on the site of Byzantium
Modern city
Istanbul
Modern country
Turkey
Role
Capital of the Eastern Roman Empire until 1453
Key source
Procopius, historian of Justinian's reign
Status
UNESCO 'Historic Areas of Istanbul' (1985)

What is Constantinople known for?

Constantinople was founded by the emperor Constantine I in 330 CE on the site of the Greek city of Byzantium, on the Bosporus. It was the capital of the Eastern Roman, or Byzantine, Empire for more than a thousand years, until the Ottoman conquest in 1453, and is now Istanbul. Its historic areas, including Hagia Sophia, are a UNESCO World Heritage Site.

Under Justinian I in the 6th century, the historian Procopius wrote that in 536 the sun gave its light without brightness, like the moon, for the whole year. Other writers in the Mediterranean, China and Ireland recorded dim skies, cold and crop failures at the same time.

Tree-ring and ice-core studies now link the event to large volcanic eruptions in 536 and 540, which cooled the Northern Hemisphere. The Plague of Justinian struck Constantinople a few years later, in 541–542.

Why it is on Credible Theories

Procopius, writing in Constantinople, described the dim sun of 536.

Mentioned on these pages

Sources

  1. UNESCO World Heritage Centre, 'Historic Areas of Istanbul'Reference
  2. Encyclopaedia Britannica, 'Istanbul'Reference
  3. Wikipedia, 'Volcanic winter of 536'Reference

Pictures on profile pages are drawn placeholders, not likenesses. Public-domain portraits and photographs will replace them.

Updated