This is based on a real news story. I remember not being able to turn on the news for a couple of days without being told that my horoscope was going to change. It had something to do with the moon’s gravitational pull shifting the Earth’s axis. Doing a quick internet search now, it looks like it was much ado about nothing for many of us, as it didn’t change the specific zodiac westerners use.
It’s interesting to think that your Zodiac sign, which we’re told is empirically immutable, based on mathematics and direct observation of undeniable physical reality, can change depending on who you ask and which system they used. In a way, it turns out your zodiac sign is a lot like your shoe size.