Why do astrology and numerology also use agricultural time instead of western calendar? Does the religious god allow it?

In ancient China, astrology and numerology were based on the eight characters of the lunar calendar and the Book of Changes.

Astrology or numerology in Iraq uses solar or western calendars.

If you don't believe in God, God won't influence you.

The Christian church wants everyone to believe in the God who decides everything and forbids people to tell fortune or use astrology.

But in fact, it is not God who has the final say, but astrologers or numerologists who don't believe in God but believe in numerology.

Who has seen God? If you believe in your heart, there will be effect or redemption; if you don't believe, there will be no.