"During this year a most dread portent took place. For the sun gave forth its light without brightness...and it seemed exceedingly like the sun in eclipse, for the beams it shed were not clear."
- Byzantine historian Procopius, report on the war with the Vandals, AD 536
"There was a sign from the sun the like of which had never been seen or reported before. The sun became dark and its darkness lasted for eighteen months. Each day it shone for about four hours and still, this light was but a feeble shadow. Everyone declared that the sun would never recover its full light again."
- Syrian bishop John of Ephesus, Ecclesiastical History, entry for AD 536.
In the year AD 536...
- Three volcanic eruptions in different parts of the world set off a volcanic winter that lasts for