Editing Espoo (section)

=== Lighting conditions ===
Espoo is located at a latitude of 60 degrees north, which causes the duration of daylight to vary considerably. At summer solstice daylight lasts for nineteen hours, while at winter solstice it only lasts for six hours. The angle of the sun is at its highest at 53.4 degrees in summertime and only at 6.6 degrees in wintertime. Espoo is among the northernmost places to have nautical dusk even at summer solstice, meaning the sun is at least six degrees below the horizon at the darkest hour of the night.<ref name="timeanddate">[https://www.timeanddate.com/sun/finland/espoo Espoo, Finland — Sunrise, Sunset, and Daylength], Time and Date AS. Accessed on 22 April 2020.</ref> At that time, the entire night passes without total darkness. In contrast, daylight at winter solstice is short, especially when there are only few sunny hours from November to January.<ref name="timeanddate"/>

Shadows cast by buildings are long even at summertime. They are at their shortest at summer solstice, about 75 percent of the height of the buildings. For example, the shadow of [[Niittyhuippu]] is 63 metres long at the time. At noon at winter solstice the shadows can be up to 8.8 times the height of the entire building. For example, the shadow of the [[Tapiola Central Tower]] is 430 metres long at the time.<ref>[https://rechneronline.de/sehwinkel/shadow-casting.php Calculate Shadow Casting: Length, Height, Altitude of the Sun] {{Webarchive|url=https://web.archive.org/web/20220906003931/https://rechneronline.de/sehwinkel/shadow-casting.php |date=6 September 2022 }}, Jumk.de Webprojects. Accessed on 4 May 2020.</ref>

The official time in Espoo is measured by the 30th eastern [[meridian (geography)|meridian]]. The city is located over five degrees west of it, so the solar noon occurs over 20 minutes later than on the 30th meridian.