The twilights
Civil twilight
Civil twilight is the light while the sun is less than 6° below the horizon, bright enough to work outdoors.
It ends at civil dusk and begins at civil dawn; the brightest planets show, and the horizon stays sharp.
Golden hour, the twilights and the moon, where you stand.
Sol for iPhone is coming soon, with each of them for the place you stand, on your phone and your wrist.
Civil twilight, where you stand.
You stand at the middle of your horizon. The dots are the sun’s path today, warm where the light turns golden; the stage opens at eighteen minutes after sunset. Slide through the day, or drag the sky to turn it.
How Sol measures it.
The sun is below the horizon but the air high above you is still in sunlight, and it scatters that light down. At 6° the illumination falls to about that of a bright moonlit night, which is where almanacs, aviation and the law draw the line. Its length depends on how steeply the sun crosses the horizon: about twenty-five minutes near the equator, over half an hour in London, and at midsummer far enough north it never ends.
Make time for the light.
Sol for iPhone is coming soon, with golden hour, the twilights and the moon for wherever you stand. Leave your address for early access and one email when it ships.
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