Latitude constant latitude and constant longitude, which are constructed with reference to the rotation axis of the Earth. The primary reference points are the poles where the axis of rotation of the Earth intersects the reference surface. Planes which contain the rotation axis intersect the surface at the meridians; and the angle between any one meridian plane and that through Greenwich (the Prime Meridian) defines the longitude: meridians are lines of constant longitude. The plane through the centre of the Earth and perpendicular to the rotation axis intersects the surface at a great circle called the Equator. Planes parallel to the
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