posted by [identity profile] keirf.livejournal.com at 12:09pm on 22/09/2010
Civil twilight may be when the sun is more than 5° below the horizon, but this doesn't take in to account that there are always 15m tall trees within 20 meters of you in Finland. As a result although the sky is bright blue, it's dark and gloomy down on the ground from about 15 minutes before sunset. A bit like when you're in a deep valley in the mountains.

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