Step 1 : Introduction to the question "
Who began the tradition of celebrating the first day of a new year on Jan. 1?"
In pre-Christian Rome under the calendar, the day was dedicated to Janus, god of gateways and beginnings, for whom January is also named. As a date in the Gregorian calendar of Christendom, New Year's Day liturgically marked the Feast of the Naming and Circumcision of Jesus, which is still observed as such in the Anglican Church and Lutheran Church. In present day, with most countries now using the Gregorian calendar as their de facto calendar, New Year's Day is probably the most celebrated public holiday, often observed with fireworks at the stroke of midnight as the new year starts in each time zone. Other global New Year's Day traditions include making New Year's resolutions and calling one's friends and family.
Step 2 : Answer to the question "
Who began the tradition of celebrating the first day of a new year on Jan. 1?"
Julius Caesar :
The early Roman calendar was 304 days and divided into 10 months. The spring Equinox marked the beginning of each new year. As the centuries ticked by, the calendar fell out of sync with the sun. Roman emperor Julius Caesar decided to correct the problem in 46 B.C. He consulted the leading mathematicians and astronomers of his time, resulting in formulation of the Julian calendar, making Jan. 1 the first day of the year. Source: History.com