A Sunset Eclipse Over Spain: Animating 12 August 2026 eclipse, City by City

An animation worth copyingPierre Chevillard posted an animation for France's slice of tomorrow's eclipse: a map dotted with cities, each one carrying a small icon of the Sun with the Moon's black disc sliding across it, ticking forward through the evening in sync with a clock in the corner. It's a nice piece of graphic design and, underneath it, a fairly approachable computation. This post rebuilds the same idea for Spain, independently, using Skyfield for the astronomy and matplotlib for the drawing. The timing could not be more on the nose: 12 August 2026 is tomorrow, and it's a total solar eclipse whose path clips northern Spain right around sunset, a rare and dramatic geometry that's been generating a lot of anticipation among eclipse chasers. Plus, it is my birthday, and I am currently in Spain! What each city's icon actually encodesAs in the animation above, for a given city and a given moment, three numbers decide what the icon looks like: the Sun's apparent angular radius, the…