The problem the Borg have to explain is that the Gospels contradict each other on the day and time of Jesus death. This is obviously a problem for other denominations too, and I have seen many Mental Gymnastics involved in trying to resolve it.
What Bible literalists do not acknowledge is that the Gospel writers, in common with nearly all other Bible writers, were not writing literal history or telling of events they necessarily believed happened. They wrote each with his own Agenda, so if that agenda demanded that Jesus died on a different day, or at a different hour to that of other Gospel writers it mattered not .
I cannot remember any Article by the JW Org that deals with this. If they did, they too would have to have some pretty fantastic Mental Gymnastics in play.