Something my former Grandma-in-law showed me 15 years ago.
On either spring or fall equinox it is possible to stand a raw egg on end on a flat surface.
The theory being that the earth is spinning evenly about its axis. (No wobble)
At this time I have 14 eggs out of an 18 pack standing on end on my kitchen counter.
Go try it. It takes a little patients and deft reflexes, but once standing, they will stay there.