If one is Jewish, there are several New Year celebrations each year. The actual beginning of the lunar Hebrew calendar is the month of Nissan, the month in which Passover occurs. The time of beginnings, Spring. Then there is Rosh Hashanah, which means, "Head of the Year", which occurs in the fall, on the new moon of Tishre, the 7th month. This Holy Day celebrates the "Genesis" of the earth, which, according to calculations made from the Torah (however inaccurate), was 5770 years ago. We also celebrate the Anniversary of the Treesor First Fruits.
It is only in the Diaspora that the Gregorian New Year is recognized. It is one of those things that we accept as "strangers" in another culture. Pope Gregory moved the New Year to January ( a relatively new month to the calendar at the time)from March after about 1,000 years of dispute about whether the birth (set in December instead of July/August which is probably more accurate) or the resurrection of Jesus should start the year.
I write these things to discuss the illusion of time and the individual importance of the way it passes.