(2005) What is the semi-circle at the top of each page on Très Riches Heures du Duc de Berry (4.3.6)?

The semicircle at the top of each page shows astrological and astronomical data.

Explanation:

In Très Riches Heures du Duc de Berry, there are a number of full page images, which also include calendar images. What we might notice is that there is a semicircle at the top of each page. This semicircle shows astrological and astronomical data. It is included because stars were integrally tied to the agricultural calendar. Moreover, many medical specialists used to believe that a person's health is somehow also related to the pattern of stars of the day he/she was born.

it demonstrate the egyptian kingdom love for the natural world

this is beacause beside the hippos blue gaze,the body was painted with the outlines of river plants, which symbolizing the marshes in which the animal lived. the figurine of the hippo named willian originates from the middle kingdom during the 12th dynasty.