The time of birth is a precise timing. If it is the solar calendar, there is only one time; if it is the lunar calendar, you must remember whether you were born in the "previous month" or the "leap month". If you forget, you can tell the solar time. If you have forgotten the Gregorian calendar and only know that it is this month, then it will be more troublesome. People who are proficient in horoscopes can calculate from your basic experience whether it is the month before or after. The situation you mentioned is that you know the birth time in the Gregorian calendar. Naturally, the online ranking is correct, and there is no possibility of being born in the Wushen month.