Circle of latitude can be calculated by a common sine or cosine function. The 60th parallel north or south is half as long as the Equator (disregarding Earth's minor flattening by 0.3%). A circle of latitude is perpendicular to all meridians. The latitude of the circle is approximately the angle between the Equator and the circle, with the angle's vertex at Earth's centre. The equator is at 0°, and the North Pole and South Pole are at 90° north and 90° south, respectively. The Equator is the longest circle of latitude and is the only circle of latitude which also is a great
Solar eclipses on the Moon one area as the Moon's shadow touches for over 5 1/2 hours the longest. Some of the eclipses on the Moon lasts for about 5 hours in one area the longest as the Earth's shadow touches for over 6 hours the longest. Some eclipses are longer when the Earth is slightly closer (on Earth, the Moon is seen with its apparent diameter is larger than the Sun's), some eclipses are shorter when the Earth is slightly further (on Earth, the Moon is seen with its apparent diameter is smaller than the Sun's). Unlike the Earth where its eclipses starts and