I am not at all trying to preach but I think sharing information is very important. I will provide you with a very brief summary and then you can continue to do research on your own, if you so choose.
New Years was celebrated in the spring for a very long time. It was celebrated according to the lunar calendar. In 46 B.C.E, Julius Caesar established January 1 as the beginning of the New Year because of his god Janus, who had two heads, one facing backwards and the other facing forward. Just like Christmas, Christians incorporated this pagan celebration into their calendar in order to appease the pagans. When New Years was celebrated in the spring, it was celebrated according to the cycles of the moon. It is in spring when things come back to life and spring is the season of rebirth and blossoming. In my opinion, spring seems like a far more logical time to celebrate a new beginning and New Year. And that is my humble opinion! Thanks for reading and please let me know what you think!