Felix' Workshop

Eclipse Countdown

Place names are resolved by Open-Meteo's keyless geocoder, and only when you press the button. Coordinates are parsed here and sent nowhere. The one other request is the horizon check further down, which reads elevation tiles from AWS terrain on its own press. The eclipse calculations run in your browser either way.

Enter a place or a pair of coordinates. This finds the next solar eclipse visible from there, counts down to its next phase, and lists the times of all of them. The disc shows the Sun as it will look from that spot, drawn with the zenith up for the moment on the clock. Every other eclipse on file is there to be picked instead, partial ones included.

Next eclipse here

—

until first contact

—

the horizon there

A low Sun is only as visible as the skyline lets it be. This reads the ground around you from the elevation tiles and draws what the Sun does against it — the one part of this tool that fetches anything besides a place name, so it waits for your press.

running order

Phase	Time	UT	Sun

The elements, the calculations and the catalogue come from Eclipse Recon, which adds the map, the terrain and the cloud forecast. The catalogue is computed from JPL DE440s by tools/eclipse-elements.py rather than copied from the NASA element pages, whose ephemeris and rotation figures are old enough to put the clock out by seconds; tools/eclipse-check.py is the test that keeps this reduction honest against the ephemeris. An eclipse pasted into Recon from its NASA page appears here too, and carries that page's own accuracy.