You joke, but I worked on a GPS app that would crash when crossing over the zero meridian. We didn't handle negative zero. The Degree/Minute/Second (DMS) near the meridian will be +/- 0 when degrees is zero. Signed zero is a thing.
I remember there was a fighter jet that crashed (*software* crash) trying to cross the other meridian in the Pacific,
https://www.engadget.com/2007-02-27-f-22-raptors-systems-cra...
This is common in maths when you approach a number 0 in this case) from either side. Your results may be dramatically different, such as "what happens when you approach 0 for f(x) = 1/x"