15 Bible Verses about Calendars

Now the sons of Israel after their number, who were chief fathers and captains of thousands and hundreds, and their officers that served the king in any matter of the courses, who came in and went out month by month throughout all the months of the year, each course was of twenty-four thousand.

He appointed the moon for times and seasons; the sun knows his going down.

And God said, Let there be lights in the firmament of the heavens to divide the day from the night; and let them be for signs and for appointed times and for days and years;

In the six hundredth year of Noah's life in the second month, the seventeenth day of the month, the same day were all the fountains of the great deep broken up, and the windows of the heavens were opened.

And the ark rested in the seventh month, on the seventeenth day of the month, upon the mountains of Ararat.

This month shall be unto you the beginning of the months; it shall be the first month of the year to you.

In the day of the first month, the first of the month shalt thou set up the tabernacle, the tabernacle of the testimony.

And God called the light Day and the darkness he called Night. And the evening and the morning were the first day.

And it came to pass in the year four hundred and eighty after the sons of Israel were come out of the land of Egypt, in the fourth year of the beginning of Solomon's reign over Israel, in the month Zif, which is the second month, that he began to build the house of the LORD.

For all things there is a season, and every will under the heaven has its time determined.

But of that day and hour no one knows, no, not even the angels of the heavens, but my Father only.

Seventy weeks are determined upon thy people and upon thy holy city to finish the prevarication and to conclude the sin and to make reconciliation for iniquity and to bring in everlasting righteousness and seal the vision and the prophecy, and to anoint the Holy of Holies. Know therefore and understand that from the going forth of the word to cause the people to return and to build Jerusalem unto the Anointed Prince, there shall be seven weeks, and sixty-two weeks, while the street shall be built again and the wall, even in troublous times. And after the sixty-two weeks the Anointed One shall be killed and shall have nothing: (and the ruling people that shall come shall destroy the city and the sanctuary; whose end shall be as a flood, until at the end of the war it shall be cut off with desolation).read more.
In one week (they are now seventy) he shall confirm the covenant by many: and at the midst of the week he shall cause the sacrifice and the oblation to cease, and because of the many abominations, desolation shall come, even until complete destruction shall be poured out upon the abominable people.

but when the fullness of the time was come, God sent forth his Son, born of a woman, born under the law,

But he answered and said unto them, When it is evening, ye say, It will be fair weather, for the heaven is glowing with an aurora. And in the morning, It will be foul weather today, for the heaven has an aurora and is cloudy. O ye hypocrites, ye know how to make decisions based on the face of the heaven, and regarding the signs of the times are ye unable? A wicked and adulterous generation seeks after a sign; and no sign shall be given unto it, but the sign of the prophet Jonah. And he left them and departed.

Now the birth of Jesus Christ was like this: That being, his mother Mary espoused to Joseph (before they came together) she was found with child of the Holy Spirit.