1054
Great Schism between Rome and Constantinople
A papal legation led by Cardinal Humbert of Silva Candida strode into Hagia Sophia during the liturgy and slapped a bull of excommunication on the high altar…
Crab Nebula supernova
A new star blazed in Taurus bright enough to see in daylight for weeks, recorded by Song, Japanese, and Arab astronomers.
Vietnam Renamed Dai Viet Under Ly Thanh Tong
The young emperor Ly Thanh Tong ascended the throne and promptly renamed his kingdom from Dai Co Viet to Dai Viet - 'Great Viet' - a declaration of ambition…
Anasazi Astronomers Record the Crab Nebula Supernova
In Chaco Canyon, Ancestral Puebloan sky-watchers observed the same brilliant 'guest star' that Chinese astronomers recorded on July fourth.
Yaroslav the Wise dies at Kiev
The Rus grand prince who had built St. Sophia in his capital, married his daughters into half the royal houses of Europe, and issued the first Rus legal code…
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Frequently asked
What happened in the year 1054?
Saeculum lists 5 events from 1054. The most significant is Great Schism between Rome and Constantinople: A papal legation led by Cardinal Humbert of Silva Candida strode into Hagia Sophia during the liturgy and slapped a bull of excommunication on the high altar.
What era was 1054 part of?
1054 falls within the High Middle Ages (1000-1300). Crusades, cathedrals, and the slow waking of Europe.
Which regions saw notable events in 1054?
The events from 1054 span Europe, East Asia, Southeast Asia and North America.