Since 2000 and continuing today, Anatoly Fomenko and Gleb Nosovsky have been conducting research pertaining to the dates contained within historical zodiacs. They have analyzed and provided decipherments for over fifty zodiacs, of which were located on three different continents. Along with deciphering the planetary positions, the researchers have provided what they believe to be the most likely datings for each zodiac.
Check the link below for a list of the zodiacs and their solutions:
New Chronology Zodiac List