Wikipedia:Reference desk/Archives/Science/2024 August 9

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August 9

Total daytime per latitude

Since the southern hemisphere's summer comes during the perihelion, I'm thinking it should be slightly shorter than the winter since the Earth moves slightly faster, so the same latitude on the northern hemisphere should have a little more total daytime over the course of the year. Now, I know that since any part of the Sun's disc above the horizon is counted as daytime, the day is "too long" by the time it takes the Sun to rise/set from nothing to half a disc being visible. In middle latitudes this takes longer than on the equator because the Sun's path is closer to horizontal. I'm wondering how are these two effect related in size. Do you have a shorter total daytime length over 1 year at 45°S than 40°N for example 78.2.180.96 (talk) 06:49, 9 August 2024 (UTC)

Here [1] are sunrise and sunset times for a selection of latitudes north and south of the equator, generally at 5° intervals. 2A02:C7B:21D:5400:7905:88D1:43B9:344C (talk) 09:29, 9 August 2024 (UTC)