Jeffro
What we actually have is an eclipse on 5 July 568 BCE but that is asserted by JWs to have occurred on 15 July 588 BCE (which is impossible because Simanu never starts in July), and a summer solstice 6 days earlier which necessarily occurred within a day of 29 June regardless of the chosen year anywhere during the neo-Babylonian period, once again showing the JW interpretation to be impossible. All of the events, as well as the required intercalary month preceding Nisan, perfectly fit 568 BCE.
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A nice summary of your position but WT scholars have shown that the lunar eclipse described in VAT 4956, 3 Simanu according to the Julian calendar would be 15 July 588 BC and that the New Year would have begun 2/3 May. The solstice 9th Simanu mentioned in the tablet is dated six days earlier thus would be 9 July 588 BC. No doubt much debate about this new research with continuing controversy but WT scholars are quite relaxed and comfortable about such controversies and so is the said scholar.
scholar JW