The celebration of New Year's began in ancient Babylonia in Mesopotamia. It was a pagan custom of ancient sun-worship 2000 years before the birth of Jesus.
The New Year's festivities that had originated in Babylon found their way to Greece and finally to Rome. The Romans called it "Saturnalia" -- in honor of Saturn. Among them it was extremely popular -- a time of revelings, drinking bouts, orgies -- finally ending in human sacrifices.
"The first day of the Saturnalia shifted during the lifetime of Rome ... it began around the middle of December ... and continued until January first. In its midst was December twenty-fifth, the day, as the Romans calculated, when the sun was at its lowest.
The earth's rotation regulates the length of a day -- the lunar phases indicate the length of a month. And the orbit of the earth around the sun dictates the length of a year.
But ONLY GOD has the AUTHORITY to set the date of the beginning of the new year!
God's sacred calendar year begins in the spring -- not in the middle of a dead winter! Notice Exodus 12:1-2, "And the Eternal spake unto Moses and Aaron in the land of Egypt, saying, This month shall be unto you the beginning of months: it shall be the FIRST MONTH OF THE YEAR TO YOU."
The first month of God's sacred calendar is called, in the Bible, "Abib". It means the month of "green ears." Later, the Jews called it "Nisan" -- a Babylonian word having the same meaning.
It was in the month of Abib or Nisan that Israel came out of Egyptian captivity under Moses (Ex. 34:18). The Hebrew month Abib overlaps the months of March-April on the pagan Roman calendar in use today.
Your Bible speaks of a great false religious system which will "think to change times and laws" (Dan. 7:25). This system has deliberately thought to change the beginning of God's calendar year in an attempt to hide God's Plan for the salvation of mankind.