In the world of the study of scripture, the true students have come to appreciate that the Gregorian Calendar which we have today, or the Julian Calendar which preceded it, have little to do with the calendar(s) discussed in scripture. As a result, many have searched the scripture over to find the true biblical pattern for the calendar, that they might correctly observe the feasts of Yahuah given to us specifically in Mosheh’s Torah, and reiterated throughout the Brit Chadashah (New Testament).While there are at least three independent calendars which are discussed in the scriptures – 1) Noach’s calendar which delivers a 360-day year – a calendar which is also adopted by Daniy’el; 2) the so-called Tsadoq or priestly calendar of 364 days based on a 30-30-31 pattern given to us in Yovheliym and Chanoch, and 3) the soli-lunar-stellar calendar given to us in Bere’shiyth 1:14, which appears to have been in use in the Gaelic/Celtic world from a time out of mind until overruled by Rome.It is not my intention here to assert the supremacy of one calendar system over another. If you adhere to a calendar which is different than the one I espouse, there will be no condemnation or verbal assault on your views here. I am simply setting forth the calendar as I understand it; the reasons why I adhere to this calendar; and most importantly, how this calendar works. As we will see, there is scriptural support for the ideas of “leap” days to accommodate each calendar, and there is evidence of a 13th month as well.