A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: David Pike
Date: 2020 Dec 26, 07:23 -0800
Adrian F you wrote: As compared to the variation calculated above by sunrise to sunset times, if “daylight” was to be defined as including when the sun is say a couple of degrees below the horizon, it seems to have a significantly bigger effect on the number of “daylight hours” per year in the far North than at the equator.
Can you think why that is? Hint, try looking at the angle the sun’s direction of travel crosses the horizon at sunrise or sunset today at say 20S and 65N