In response to: http://www.fivedoves.com/letters/apr2011/brucew421-3.htm
I don’t know which year will be the Second Coming of Christ, but it’s interesting to note that the day you calculated (May 12th 2017) happens to be Iyyar 15th. If we use the “inclusive reckoning” method (and consider the first day as already counting as day # 1 like they used to do in Bible times), we should add 25199 days and in this case we would find Iyyar 14th.
Iyyar 14th happens to be the Second Passover as prescribed in the Old Testament (Numbers 9:6-13) when someone is on a journey or ceremonially unclean (because of a dead body).
6 But some of them could not celebrate the Passover on that day because they were ceremonially unclean on account of a dead body. So they came to Moses and Aaron that same day 7 and said to Moses, “We have become unclean because of a dead body, but why should we be kept from presenting the LORD’s offering with the other Israelites at the appointed time?”
8 Moses answered them, “Wait until I find out what the LORD commands concerning you.”
9 Then the LORD said to Moses, 10 “Tell the Israelites: ‘When any of you or your descendants are unclean because of a dead body or are away on a journey, they are still to celebrate the LORD’s Passover, 11 but they are to do it on the fourteenth day of the second month at twilight. They are to eat the lamb, together with unleavened bread and bitter herbs. 12 They must not leave any of it till morning or break any of its bones. When they celebrate the Passover, they must follow all the regulations. 13 But if anyone who is ceremonially clean and not on a journey fails to celebrate the Passover, they must be cut off from their people for not presenting the LORD’s offering at the appointed time. They will bear the consequences of their sin.
I wonder if after all the battles following the Second Coming, Passover would be celebrated on Iyyar 14th that year and not on Nissan 14th as usual. Just a thought.