1. Southern Night Sky on May 1, 1006 –
as seen from Cahokia
Supernova 1006
Supernova SN1006 at 11pm view of SN brighter than all the stars and planets
spectacle was a large circular body, 2½ to 3 times as large as Venus. The sky was shining because of its light. The intensity of its light was a little more than a quarter that of Moon light" (or perhaps "than the light of the Moon when one-quarter illuminated")
Brightest in May June July of 1006 – at night – in August Sept Oct Nov by day – appearing again in the night sky in Dec – and visible in the night sky until July 1007
South

2. Predawn Sky July 4, 1054 – as seen from Cahokia
Predawn Sky June 10, – as seen from Cahokia
Supernova 1054
Starry Night – location of the Crab Nebula – Supernova 1054 – 4:15 AM
Faintly visible by day
11 months later June 10, the nova was visible in conjunction with Venus at dawn
Venus aka Morningstar
Supernova 1054