So what's the deal with these Chaldeans you are harping on about?
Chaldean order is the claim in a geocentric universe. Before everyone thought the world revolves around the sun, the earth was said to be the middle of the universe.
This became problematic when Galileo used his telescope to observe the phases of Venus. He discovered that it was impossible for Venus to be circling the earth based on the shadows that Venus uniquely displayed. It suggested that these shadows can only be explained if the planet was orbitting the sun and not the earth.
Copernicus claim eventually was considered heresy and tried by the Catholic Church. It turns out that the Chaldean Order shortly became forgotten with the new photographs of Venus.
There are seven colors in a rainbow.
Here are the days of the week named after the seven planets of the Chaldean order:
1. Sunday (when the sun was considered a planet)
2. Monday (when the moon was considered a planet)
3. Tuesday (Mardi in French, or Mars)
4. Wednesday (Mercredi in French, or Mercury)
5. Thursday (Jeudi in French, Jupiter)
6. Friday (vendredi in French, Venus)
7. Saturday (Samedi in French, Saturn)
The Chaldean order is still prominent to those who wish to understand the truth and not merely dogs of Copernicus. It gets more accurate when you look at the moon phases and how stones and shadows were used to measure time before time became a unit of measurement.