The sun's geometry
Azimuth
Azimuth is the sun's compass bearing: 90° is due east, 180° due south and 270° due west.
The sun rises north of east in summer and south of east in winter, and the difference grows with latitude.
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.
Azimuth, 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 this minute. Slide through the day, or drag the sky to turn it.
How Sol measures it.
Measured clockwise from north. At the equinoxes the sun rises at 90° and sets at 270° everywhere; at midsummer in London it rises near 50° and sets near 310°. The window instrument reads a facing the same way, which is how it knows a north-east pane sees the early-summer sun for hours.
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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