Guy de Chauliac observes the planets Saturn, Jupiter, and Mars conjoined in the sky under the sign of Aquarius and a solar eclipse on the same day. This sign is interpreted as foreboding by many, and Chauliac will later blame it for the
Black Plague.ref name=pgs. 143-148 ASIN B000K6TDP2pgs. 143–148 ASIN B000K6TDP2ref name=Horrox, Rosemary 1994. pg.104-105Horrox, Rosemary. The Black Death. Manchester: Manchester University Press, 1994. ISBN 978-0-7190-3498-5 pg.104–105