Northern midlatitudes · 4,448 km from the equator · solar noon matches Greenwich
Sphere radius 6,371 km. Tilt 23.44°. Day and night are drawn at solar noon on this meridian.
40° 00′ 00″ N · 0° 00′ 00″
Northern midlatitudes. That parallel is a small circle. Every meridian is a great circle. One degree of latitude on this sphere is 111.2 km.
The cool lines are the tropics and polar circles. Cream is the prime meridian, the date line, and the equator.