The sundial of Ahaz was probably of Babylonian design.  When the shadow went “ten degrees backward” (2 Kings, xx, II) ambassadors were sent from Babylon “to enquire of the wonder that was done in the land” (2 Chron. xxxii, 31).  It was believed that the king’s illness was connected with the incident.  According to astronomical calculation there was a partial eclipse of the sun which was visible at Jerusalem on 11th January, 689 B.C, about 11.30 a.m.  When the upper part of the solar disc was obscured, the shadow on the dial was strangely affected.

The Babylonian astrologers in their official documents were more concerned regarding international omens than those which affected individuals.  They made observations not only of the stars, but also the moon, which, as has been shown, was one of their planets, and took note of the clouds and the wind likewise.

As portions of the heavens were assigned to various countries, so was the moon divided into four quarters for the same purpose—­the upper part for the north, Gutium, the lower for the south, Akkad or Babylonia, the eastern part for Elam, and the western for Amurru.  The crescent was also divided in like manner; looking southward the astrologers assigned the right horn to the west and the left to the east.  In addition, certain days and certain months were connected with the different regions.  Lunar astrology was therefore of complicated character.  When the moon was dim at the particular phase which was connected with Amurru, it was believed that the fortunes of that region were in decline, and if it happened to shine brightly in the Babylonian phase the time was considered auspicious to wage war in the west.  Great importance was attached to eclipses, which were fortunately recorded, with the result that the ancient astronomers were ultimately enabled to forecast them.

The destinies of the various states in the four quarters were similarly influenced by the planets.  When Venus, for instance, rose brightly in the field of Anu, it was a “prosperor” for Elam; if it were dim it foretold misfortune.  Much importance was also attached to the positions occupied by the constellations when the planets were propitious or otherwise; no king would venture forth on an expedition under a “yoke of inauspicious stars”.

Biblical references to the stars make mention of well-known Babylonian constellations: 

Canst thou bind the sweet influences of Pleiades, or loose the bands of Orion?  Canst thou bring forth Mazzaroth (? the Zodiac) in his season? or canst thou guide Arcturus with his sons?  Knowest thou the ordinances of heaven? canst thou set the dominion thereof in the earth? Job, xxxviii, 31-33.  Which maketh Arcturus, Orion, and Pleiades, and the chambers of the south. Job, ix, 9.  Seek him that maketh the seven stars and Orion, and turneth the shadow of death into the morning, and maketh the day dark with night. Amos, v, 8.

The so-called science of astrology, which had origin in ancient Babylonia and spread eastward and west, is not yet extinct, and has its believers even in our own country at the present day, although they are not nearly so numerous as when Shakespeare made Malvolio read: