There is no celestial component of the seven-day cycle.
Seven days is fixed by texts and traditions.
The year and the month do have a celestial component. The seven-day week is a purely abstract convention that does not repose on any celestial phenomenon.
The year and the month do have a celestial component. The seven-day week
is a purely abstract convention that does not repose on any celestial phenomenon.
You seem to discount G-d, the creator of the universe.
He told us that there are seven days to the week.
b'shem Y'shua