The author of the website, www.360calendar.com, places the 1st of Nisan on this 360‑day solar calendar for the year 1939 on March 30, 1939 and the start of the Veadar (intercalary month) for 1939 on February 28th. In deference to the brilliant work shown on that website, which uses a sophisticated mathematical approach to determine key dates, this writer has compiled the Jewish Rabbinical calendar, the Gregorian calendar and the Prophetic solar calendar in columnar fashion side by side on the spreadsheet tabbed as 360 solar Veadar month cal.
It also appears very possible that the 80-year reference in Psa 90:10 would be the start of two 40-year cycles such as the sort such a calendar requires as we examine the Scriptures in the light of the facts of Israel's reunification on May 14, 1948. If we are to use the 70‑year reference with confidence as a prophetic accounting of a generation's time line then it seems equally certain that the 80‑year reference also has prophetic implications. Therefore, the two 40-year spans would begin for this prophetic calendar 10 years before May 14, 1948 or the year 1939.
Using such a calendar for the final countdown of years at the end of the age (if we are indeed at that point in history and current events are rapidly making such an argument more and more likely with each passing day), then the first year of reckoning would be 1939 and the end of the 2nd 40-year cycle would be in 2018 as illustrated on the spreadsheet tabbed as 1939.
The reason this seems likely is because of the reference to the final week concluding with 1,290 days as it would need to if the last 3 1/2 years had a intercalary month added at either the beginning or the end of the 1,290 days, as described in the prophetic calendar shown on the website http://www.360calendar.com/bible-prophecy-360-days-calendar-3sup-40-year.htm. The following table is taken from the above website and was used in computing the calendar timeline which the remainder of the conclusions are based.
As can be seen on the spreadsheet tabbed 360 solar Veadar month cal the year 2015 has an intercalary month so the countdown for the final 1,290 days of the final seven years of Dan 9:24-27 would logically begin with the start of the intercalary month found during that year to begin on February 18, 2015. Using that month as a reference point one can count from that day 1,290 days for the completion of the 7 year period or 1,335 days as mentioned in Daniel 12:12 referred to as blessed (believed by the writer to possibly be the beginning of the Lord’s millenial reign on Earth).
According to this calendar the tribulation will end during 2018 on August 30th and the following day will begin Tishri 1 or Rosh Hoshanah on that calendar. 45 days later we see the 1,335th day falls on October 14th, 2018. We are told in Dan 12:12 that one who awaits that day is blessed but we can only speculate that that day is likely to be the day of the Lord's coronation as King of this world.
If the Lord comes back in 2017, the question that begs to be asked is "why does it take Him and His army an entire year to get rid of the abomination that maketh desolate (Dan 12:11)?" Perhaps the answer lies in the idea that the 70-year generation completes their