I'm just curious about something & wonder if the experts could help.
Basically I am documenting all of the main lines of evidence for the JWs being The One & then investigating each claim systematically.
I have now reached the dreaded November 1st, 2011 Watchtower & am sitting in front of a copy of Cartes du Ciel and a Babylonian calendar converter I found at http://www.staff.science.uu.nl/~gent0113/babylon/babycal_converter.htm
I realise these claims have been challenged and documented in depth elsewhere, but I'm keen to do my own research rather than copy & paste. My question is regarding date conversion - when inputting the Gregorian dates as given at the bottom of the tablet's translation I found at http://www.caeno.org/pdf/F019_Translation.pdf then the lunar positions all seemed pretty close (visually, I wasn't dealing with exact degrees here). But the Gregorian dates in the above online converter are all shifted one day back, throwing out the lunar positions so that they don't really match.
I'm more inclined to believe the ones that match. ie. the dates on the translation PDF, but I've seen other researchers use, for example, April 23rd for Nisanu 1 instead of the April 22nd that's on the translation PDF.
I hope I'm not being dim and missing something obvious but, for example, one examination here uses April 22nd: http://www.jehovahs-witness.com/topic/216051/do-all-13-sets-lunar-positions-on-vat-4956-fit-year-588-587-b-c-e?size=10&page=1
And here uses April 23rd: http://www.jehovahs-witness.com/topic/216056/vat-4956-comparison-lunar-three-time-intervals-years-568-7-bce-588-7-bce?size=10&page=1
Is there really any reliable way to get a Gregorian date which I can put into Cartes du Ciel? I'm keen to work out the "official" Gregorian dates for 588 and put those in too (although I know this opens a can of worms as Furuli has his own dates for this).
Who'd have thought disproving 100+ years of changing doctrine could be so hard?