I might have figured out why 3.5 years is 1260 days in the bible. (1260 days / 360 days a year) = 3.5 Biblical years.

 

First we know for a fact that a lunar year is 354.37 days.

 

We also know that a Tropical Year (Our Solar Calendar) is 365.24219 days

 

If we ADD both the Lunar and Solar Years together and Divide the answer by 2, you get:

 

359.80 Average Days between both the Solar and Lunar Years. 

 

So if we were to round to the nearest whole number, it would be 360 average days in a year or prophetic biblical year.

 

This seems like a reasonable calculation, but there may be more……….anyone?

 

- Robert Rose