The day
Dusk
Dusk is the twilight after sunset, until the sun is 18° below the horizon and the night is complete.
It passes through civil, nautical and astronomical twilight in turn, each a deeper blue than the last.
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.
Dusk, 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 same passage as dawn, reversed. How long it takes depends on the angle the sun crosses the horizon at: steep near the equator, so night comes fast, and shallow in the north, so the light lingers. The drawing shows that angle for where you stand — it is ninety degrees minus your latitude at the equinox.
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.
Explore the light
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