Yahuah designed and created His divine calendar on the fourth day of creation. The purpose was and is to teach us about His plan of redemption through Yahusha the MessiYAH.
"And Yahuah 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
Yahuah’s calendar is based on the Solar , Star's and the Moon. Today, the world observes the Babylonian calendar, which is based on the Moon, but Yahuah’s calendar has not changed. Yahuah is the same yesterday, today, and forever.
A key word that we must understand in Genesis 1:14 is seasons. This word has been translated and interpreted incorrectly for centuries. The root meaning of the word season is the Hebrew word "Moade or Moadim", it means "an appointed time, a festival."
In the Hebrew Stone’s Edition Tanakh, (O.T.) Genesis 1:14 and they shall serve as signs, and for festivals, and for days and years."
Psalm 104:19 "Yahuah appointed the moon for seasons," the word seasons again is "Moadim" which is "appointed times, festivals." Therefore, we can say Yahuah appointed the moon to determine the appointed times and festivals.
We need to realize that these "Moadim-appointed times" were set in the earth prior to the creation of any living being. Yahuah had already created a time table for His children to meet with Him.
Yahuah does not make mistakes, nor does He change His mind. Yahuah made this a sign of his covenant. These appointed times are signs of Yahuah’s agreement with us, that He is our Alahym and we are His people!