According to the modern Gregorian and the Julian calendar, this day is the first day of the year. It was for the first time in 45 BC under the Julian calendar the new year was celebrated on 1 January. God Jannus is considered to be the God of gateways and beginnings. On the other hand, The Roman Catholic Church celebrates the Solemnity of Mother Marry and The Mother Of Jesus. Some hospital in the United States also give out prizes to the first baby born in the new year.
Source: dna December 31, 2020 14:15 UTC