Another French Fail

rickl: "...The specifics may be different for other latitudes. I believe it has something to do with Earth's elliptical orbit."

So complicated! A spherical not ovoid planet following a round not elliptical orbit was one of the French Revolution's loftier goals, as part of metric calendar reform.

(See? This ^ is why I just lurk. Or sleep.)

Syriasly, thanks for the details on sunrise/sunset variance.