Constellation deviation _ constellation deviation value

Why is101October 23rd sometimes divided into Scorpio and sometimes into Libra?

Constellation division is not a definite concept from the beginning, and sometimes it is around 10.

If you are on such a vague date, you can either choose one and fix it, or both of them are your constellations. No problem. The division of constellations comes from abroad. So there is a deviation in time.