Are constellations also calculated by age?

If you have a Gregorian calendar, you don't need to know your age, because constellations are calculated according to the Gregorian calendar.

If it's not the lunar calendar, you need age, so if you want to change it to the solar calendar, you need to know when you were born. You also know that this year's solar calendar in the 65438+ October lunar calendar is different from next year's, so you must know when you were born.