The light

Alpenglow

Alpenglow is the pink light on mountains facing away from the sun just after sunset, lit by the sky.

The peaks glow after the valley is dark because they are lit by the afterglow itself, reflected down.

Tonight's forecast

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.

Alpenglow, 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 true alpenglow comes after the sun is below the horizon: the eastern faces are lit by light scattered back from the still-sunlit sky in the west, which is why it is pink rather than gold and why it fades from the bottom up. The gold on the same peaks a little earlier, while the sun is still up, is ordinary low sunlight.

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.

All thirty words of light