Do the twelve branches of Zhouyi take beginning of spring as the New Year or the new calendar as the New Year?

The zodiac has nothing to do with the Gregorian calendar, so it can be said with certainty that it will not be calculated according to the Gregorian calendar.

From the numerology point of view, the change of the zodiac is counted from the date of beginning of spring, but it is generally customary to take the first day of the first month as the boundary. Therefore, if you are writing horoscopes or divining with Zhouyi, you must take beginning of spring as the boundary, and at other times you can take the first day of the first month as the boundary.