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posted by [identity profile] keirf.livejournal.com at 09:24am on 22/09/2010
Always depressing from my point of view. From now the Tampere nights are going to be longer than the Cambridge nights.

http://www.gaisma.com/en/location/tampere.html
http://www.gaisma.com/en/location/peterborough.html

These are interesting, especially the "sun's path in the sky" charts, which show that the real problem I face here in Finland in the winter is that although there is supposedly 4 hours of daylight the sun barely manages to limp above the horizon, and is therefore blocked by the trees and apartment buildings.
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ptc24: (Default)

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posted by [personal profile] ptc24 at 09:38am on 22/09/2010
Well, it depends on what you mean by "nights", if you exclude civil twilight, then the cross-over seems to be Oct 6:

http://www.wunderground.com/history/airport/EFTP/2010/10/6/DailyHistory.html?req_city=NA&req_state=NA&req_statename=NA
http://www.wunderground.com/history/airport/EGUN/2010/10/6/DailyHistory.html?req_city=NA&req_state=NA&req_statename=NA

...but as you say, the low sun in Findland means that the quality of daylight during daylight hours is low, so I guess it all balances out somehow.
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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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