"Because the Earth slows by 1 degree every 72 years over a …

"Because the Earth slows by 1 degree every 72 years over a period of 2,160 years, it moves backward by 30°, the sun begins to rise in a different constellation on the morning of the equinox and solstice. This is known as the precession of the equinoxes."
https://twetch.app/t/f4139c192a5fd7bc6f3e11a9ad6c7c692b7bcf06a4b1ea7679958282fb2da198