Calendar Astronomy

IAUA God's Sacred Calendar
IAUA End Time Ministry
Preparing for the End of Time

I have found many people do not have enough of a practical understanding of astronomy to grasp its application to God's Sacred Calendar. This presentation will go a little deeper into explaining some astronomical details than any of my previous descriptions.

This presentation assumes you have read the book God's Sacred Calendar for the details, explanations, and proofs of the calendar determination.

Many traditional methods of calendar determination rely on imprecise and fanciful methods. God's Law cannot be based on imprecise casual human observation of the skies or even worse, vague determinations from crop cycles influenced by the weather of all things. Our God is greater than these simple human methods. He sets the standard because He anticipates and precedes the precision of modern scientific method.

God has specified the astronomical signals of the sun and the moon determine the appointed times and the course of days and years.

14 And God said, Let there be lights in the firmament of the heaven to divide the day from the night; and let them be for signs, and for seasons, and for days, and years:
Genesis 1:14

The rotation of the earth creates the transition to a new day starting at sunset according to the Bible.

19 And the evening and the morning were the fourth day.
Genesis 1:19

As the earth rotates the time is constantly changing in a flow around the planet. The hours and minutes are broken into time zones which are usually an hour apart. This allows people in the same area (time zone) to have the same time and still allow the time to be different around the planet.

The civil day changes at midnight for the entire time zone. The sacred day of Sabbath observance changes at sunset which is a different time in different parts of the time zone. This is the first of many differences between civil time according to the Gregorian Calendar and sacred time according to God's Calendar.

This simplified diagram helps to visualize the astronomical relationships. We see the rays of the sun are nearly parallel after they travel the great distance from the sun even though the sun is vastly larger than the earth. After I made this diagram, which is accurately illustrates the direction of the rotation of the earth relative to the direction of its orbit, I realized I had drawn it from the perspective of the south pole. I could have reversed the diagram but it doesn't really matter.

Remember, the word "day" has at least two different meanings. There is the 24 hour (approximately) cycle of the "day" and the 12 hour (approximately) time of daylight which is also called "day".

Because of the flow of time around the world, a specific fixed frame of reference is needed to measure calendar time. The civil calendar uses Greenwich as the frame of reference. The sacred calendar uses Golgotha (Jerusalem). This results in an important distinction you need to understand between the local day and the world day.

The local day of sacred observance is from sunset to sunset. The world day first begins at sunset on the opposite side of the planet from Golgotha which is sunrise of the previous day at Golgotha. The world day is the same day of the week for the entire world just before sunset on the opposite side of the planet from Golgotha which is just before sunrise at Golgotha.

The importance of this distinction comes in determining the start of the month and other elements of God's Calendar. The new moon is one of the most spectacular signals tracked by the ancients because it is periodically seen as a solar eclipse. The signal of the new moon is also called conjunction. The world day which begins after conjunction is the first day of the month. Therefore, the first local day of the month in Jerusalem is the day which begins at sunset after the first sunrise at Golgotha, which occurs after conjunction.

In the same way, the spring equinox is the yearly signal which is followed by the first yearly Sabbath world day which begins at sunrise on the 14th day of the month. It may be several days after equinox before the first 14th day of the month arrives.

One of the things which validates this method for determining the start of the year is the matching importance of the yearly events. The spring equinox is the yearly signal which is followed by the first yearly Sabbath.

There is a new moon twelve or thirteen times a year. Why would this monthly event be used to determine the start of the year? The once a year event of the first Sabbath of Unleavened Bread is the appropriate yearly event to follow the yearly signal.

If this little journey into astronomy has fascinated you, there are several places to learn more. academics/courses/astro201/question2201.htm

Next: Additional Materials

Revised 2010-04-23