The Start of Astrology was lost through history. It was actually started in old Babylonian period

Charles Victor McLean has written:

'Babylonian astrology and its relation to the Old Testament' -- subject(s): Astrology, Assyro-Babylonian, Bible, Criticism, interpretation

For Astrology rather than Astronomy.

Astrology was the foundation of all the ancient faiths: Egyptian, Babylonian, Greek, Roman, Zoroastrian, Mithraism, the Druids and the Norse gods. Astrology was also at the heart of the Mayan, Aztec and Inca religions in the Americas with the Sun as the supreme God.

Babylonian civilization is still today living with us in modern world. Astrology and The days,weeks and years was originally calculated by the Babylon civilization.