Calendar Of YHVH

First Enoch 74:10-12 (RHCV, R.H. Charles Version)And if five years are added together the sun has an overplus of thirty days, and all the days which accrue to it for one of those five years, when they are full, amount to three hundred and sixty-four days. And the overplus of the sun and of the stars amounts to six days: in five years six days every year come to thirty days: and the moon falls behind the sun and stars to the number of thirty days. And the sun and the stars bring in all the years exactly, so that they do not advance or delay their position by a single day unto eternity; but complete the years with perfect justice in three hundred and sixty-four days days.

First Enoch 75:2-3 (RHCV, R.H. Charles Version)reckoned in the reckoning of the year. And owing to them men go wrong therein, for those luminaries truly render service on the world-stations, one in the first portal, one in the third portal of the heaven, one in the fourth portal, and one in the sixth portal, and the exactness of the year is accomplished through its separate three hundred and sixty-four stations. For the signs and the times and the years and the days the angel Uriel showed to me, whom the Lord of glory hath set for ever over all the luminaries of the heaven, in the heaven and in the world, that they should rule on the face of the heaven and be seen on the earth, and be leaders for the day and the night, i.e. the sun, moon, and stars, and all the ministering creatures which make their revolution in all the chariots

First Enoch 82:6 (RHCV, R.H. Charles Version)For they belong to the reckoning of the year and are truly recorded (thereon) for ever, one in the first portal and one in the third, and one in the fourth and one in the sixth, and the year is completed in three hundred and sixty-four days.

Genesis Commentaries [4Q252] 1:254 (DSS, Dead Sea Scrolls)On that day Noah went forth from the ark (viii, 18) at the end of a full year of three hundred and sixty-four days.

Jubilees 6:32 (RHCV, R.H. Charles Version)And command thou the children of Israel that they observe the years according to this reckoning- three hundred and sixty-four days, and (these) will constitute a complete year, and they will not disturb its time from its days and from its feasts; for everything will fall out in them according to their testimony, and they will not leave out any day nor disturb any feasts.

First Enoch 74:13 (RHCV, R.H. Charles Version)In three years there are one thousand nienty-two days days, and in five years one thousand eight hundred and twenty days, so that in eight years there are two thousand nine hundred and twelve days. For the moon alone the days amount in three years to one thousand sixty-two days, and in five years she falls fifty days behind: [i.e. to the sum (of one thousand seven hundred and seventy) there is five to be added (one thousand and) sixty-two days.] And in five years there are one thousand seven hundred and seventy days, so that for the moon the days six in eight years amount to twenty-one thousand,eight hundred and thirty-two days. [For in eight years she falls behind to the amount of eighty days], all the seventeen days she falls behind in eight years are eighty. And the year is accurately completed in conformity with their world-stations and the stations of the sun, which rise from the portals through which it (the sun) rises and sets thirty days.
Enoch 74:13 Math for Calendar Years:
1092 days/364 days = 3 years
1820 days/364 days = 5 years
2912 days/364 days = 8 years

Exodus 12:2 (NASB, New American Standard Bible)“This month shall be the beginning of months for you; it is to be the first month of the year to you.

First Enoch 2:1 (RHCV, R.H. Charles Version)Observe ye everything that takes place in the heaven, how they do not change their orbits, and the luminaries which are in the heaven, how they all rise and set in order each in its season, and

Jubilees 6:23-24 (RHCV, R.H. Charles Version)And on the new moon of the first month, and on the new moon of the fourth month, and on the new moon of the seventh month, and on the new moon of the tenth month are the days of remembrance, and the days of the seasons in the four divisions of the year. These are written and ordained as a testimony for ever. And Noah ordained them for himself as feasts for the generations for ever, so that they have become thereby a memorial unto him.

Psalm 104:19 (NASB, New American Standard Bible)He made the moon for the seasons; The sun knows the place of its setting.

First Enoch 82:9-11 (RHCV, R.H. Charles Version)And these are the orders of the stars, which set in their places, and in their seasons and festivals and months. And these are the names of those who lead them, who watch that they enter at their times, in their orders, in their seasons, in their months, in their periods of dominion, and in their positions. Their four leaders who divide the four parts of the year enter first; and after them the twelve leaders of the orders who divide the months; and for the three hundred and sixty (days) there are heads over thousands who divide the days; and for the four intercalary days there are the leaders which sunder the four parts of the year.
360+1+1+1+1=364 days

Sirach [Ecclesiasticus] 43:6-8 (RSV, Revised Standard Version)He made the moon also, to serve in its season to mark the times and to be an everlasting sign. From the moon comes the sign for feast days, a light that wanes when it has reached the full. The month is named for the moon, increasing marvelously in its phases, an instrument of the hosts on high shining forth in the firmament of heaven.

Jubilees 29:16 (RHCV, R.H. Charles Version)And to his mother Rebecca also four times a year, between the times of the months, between ploughing and reaping, and between autumn and the rain (season) and between winter and spring, to the tower of Abraham.

Jubilees 4:17 (RHCV, R.H. Charles Version)And he was the first among men that are born on earth who learnt writing and knowledge and wisdom and who wrote down the signs of heaven according to the order of their months in a book, that men might know the seasons of the years according to the order of their separate months.

Jubilees 6:23 (RHCV, R.H. Charles Version)And on the new moon of the first month, and on the new moon of the fourth month, and on the new moon of the seventh month, and on the new moon of the tenth month are the days of remembrance, and the days of the seasons in the four divisions of the year. These are written and ordained as a testimony for ever.

Jubilees 6:25 (RHCV, R.H. Charles Version)And on the new moon of the first month he was bidden to make for himself an ark, and on that (day) the earth became dry and he opened (the ark) and saw the earth.

Jubilees 6:26-30 (RHCV, R.H. Charles Version)And on the new moon of the fourth month the mouths of the depths of the abyss beneath were closed. And on the new moon of the seventh month all the mouths of the abysses of the earth were opened, and the waters began to descend into them. And on the new moon of the tenth month the tops of the mountains were seen, and Noah was glad. And on this account he ordained them for himself as feasts for a memorial for ever, and thus are they ordained. And they placed them on the heavenly tablets, each had thirteen weeks; from one to another (passed) their memorial, from the first to the second, and from the second to the third, and from the third to the fourth. And all the days of the commandment will be two and fifty weeks of days, and (these will make) the entire year complete. Thus it is engraven and ordained on the heavenly tablets.

First Enoch 75:1-9 (RHCV, R.H. Charles Version)And the leaders of the heads of the thousands, who are placed over the whole creation and over all the stars, have also to do with the four intercalary days, being inseparable from their office, according to the reckoning of the year, and these render service on the four days which are not reckoned in the reckoning of the year. And owing to them men go wrong therein, for those luminaries truly render service on the world-stations, one in the first portal, one in the third portal of the heaven, one in the fourth portal, and one in the sixth portal, and the exactness of the year is accomplished through its separate three hundred and sixty-four stations. For the signs and the times and the years and the days the angel Uriel showed to me, whom the Lord of glory hath set for ever over all the luminaries of the heaven, in the heaven and in the world, that they should rule on the face of the heaven and be seen on the earth, and be leaders for the day and the night, i.e. the sun, moon, and stars, and all the ministering creatures which make their revolution in all the chariots of the heaven. In like manner twelve doors Uriel showed me, open in the circumference of the sun’s chariot in the heaven, through which the rays of the sun break forth: and from them is warmth diffused over the earth, when they are opened at their appointed seasons. [And for the winds and the spirit of the dew when they are opened, standing open in the heavens at the ends.] As for the twelve portals in the heaven, at the ends of the earth, out of which go forth the sun, moon, and stars, and all the works of heaven in the east and in the west, There are many windows open to the left and right of them, and one window at its (appointed) season produces warmth, corresponding (as these do) to those doors from which the stars come forth according as He has commanded them, and wherein they set corresponding to their number. And I saw chariots in the heaven, running in the world, above those portals in which revolve the stars that never set. And one is larger than all the rest, and it is that that makes its course through the entire world.

First Kings 8:65 (NASB, New American Standard Bible)So Solomon observed the feast at that time, and all Israel with him, a great assembly from the entrance of Hamath to the brook of Egypt, before the LORD our God, for seven days and seven more days, even fourteen days.

First Enoch 82:4 (RHCV, R.H. Charles Version)Blessed are all the righteous, blessed are all those who walk In the way of righteousness and sin not as the sinners, in the reckoning of all their days in which the sun traverses the heaven, entering into and departing from the portals for thirty days with the heads of thousands of the order of the stars, together with the four which are intercalated which divide the four portions of the year, which lead them and enter with them four days.
Intercalation (adding time to calendar to match the solar year of 365.25 days)

Second Chronicles 30:23 (NASB, New American Standard Bible)Then the whole assembly decided to celebrate the feast another seven days, so they celebrated the seven days with joy.
Some say that intercalation comes by adding an extra week to the Feast of Unleavened Bread, but the text does not explicitly say that.

First Enoch 72:6-35 (RHCV, R.H. Charles Version)shines in the face of the heaven. In this way he rises in the first month in the great portal, which is the fourth [those six portals in the cast]. And in that fourth portal from which the sun rises in the first month are twelve window-openings, from which proceed a flame when they are opened in their season. When the sun rises in the heaven, he comes forth through that fourth portal thirty, mornings in succession, and sets accurately in the fourth portal in the west of the heaven. And during this period the day becomes daily longer and the night nightly shorter to the thirtieth morning. On that day the day is longer than the night by a ninth part, and the day amounts exactly to ten parts and the night to eight parts. And the sun rises from that fourth portal, and sets in the fourth and returns to the fifth portal of the east thirty mornings, and rises from it and sets in the fifth portal. And then the day becomes longer by two parts and amounts to eleven parts, and the night becomes shorter and amounts to seven parts. And it returns to the east and enters into the sixth portal, and rises and sets in the sixth portal one-and-thirty mornings on account of its sign. On that day the day becomes longer than the night, and the day becomes double the night, and the day becomes twelve parts, and the night is shortened and becomes six parts. And the sun mounts up to make the day shorter and the night longer, and the sun returns to the east and enters into the sixth portal, and rises from it and sets thirty mornings. And when thirty mornings are accomplished, the day decreases by exactly one part, and becomes eleven parts, and the night seven. And the sun goes forth from that sixth portal in the west, and goes to the east and rises in the fifth portal for thirty mornings, and sets in the west again in the fifth western portal. On that day the day decreases by two parts, and amounts to ten parts and the night to eight parts. And the sun goes forth from that fifth portal and sets in the fifth portal of the west, and rises in the fourth portal for one- and-thirty mornings on account of its sign, and sets in the west. On that day the day is equalized with the night, [and becomes of equal length], and the night amounts to nine parts and the day to nine parts. And the sun rises from that portal and sets in the west, and returns to the east and rises thirty mornings in the third portal and sets in the west in the third portal. And on that day the night becomes longer than the day, and night becomes longer than night, and day shorter than day till the thirtieth morning, and the night amounts exactly to ten parts and the day to eight parts. And the sun rises from that third portal and sets in the third portal in the west and returns to the east, and for thirty mornings rises in the second portal in the east, and in like manner sets in the second portal in the west of the heaven. And on that day the night amounts to eleven parts and the day to seven parts. And the sun rises on that day from that second portal and sets in the west in the second portal, and returns to the east into the first portal for one-and-thirty mornings, and sets in the first portal in the west of the heaven. And on that day the night becomes longer and amounts to the double of the day: and the night amounts exactly to twelve parts and the day to six. And the sun has (therewith) traversed the divisions of his orbit and turns again on those divisions of his orbit, and enters that portal thirty mornings and sets also in the west opposite to it. And on that night has the night decreased in length by a ninth part, and the night has become eleven parts and the day seven parts. And the sun has returned and entered into the second portal in the east, and returns on those his divisions of his orbit for thirty mornings, rising and setting. And on that day the night decreases in length, and the night amounts to ten parts and the day to eight. And on that day the sun rises from that portal, and sets in the west, and returns to the east, and rises in the third portal for one-and-thirty mornings, and sets in the west of the heaven. On that day the night decreases and amounts to nine parts, and the day to nine parts, and the night is equal to the day and the year is exactly as to its days three hundred and sixty-four. And the length of the day and of the night, and the shortness of the day and of the night arise-through the course of the sun these distinctions are made (lit. ‘ they are separated ‘). So it comes that its course becomes daily longer, and its course nightly shorter.

First Enoch 78:13 (RHCV, R.H. Charles Version)On the side whence the light of the moon comes forth, there again she wanes till all the light vanishes and all the days of the month are at an end, and her circumference is empty, void of light. And three months she makes of thirty days, and at her time she makes three months of twenty- nine days each, in which she accomplishes her waning in the first period of time, and in the first