They also contain references to historical astronomical events during the fifth to the eighth centuries .
The Katun Pages ( pages 2 - 11 ) in the Paris Codex are concerned with the rituals to be performed at Katun completions .
Katun Pages also contain references to historical astronomical events during the fifth to the eighth centuries .
The Katun Pages ( pages 2 - 11 ) in the Paris Codex are concerned with the rituals to be performed at Katun completions .