lines that run eastand west but measure distdance north and south of the equator.
Lines measuring distance east or west of The Prime Meridian, measurment of distance east and west of the Prime Meridian
2 different days, one in winter and one in summer, where the days are the longest or shortest of the year.
either of two times of the year when the sun crosses the plane of the earth's equator and day and night are of equal length
one of the natural periods into which the year is divided by the equinoxes and solstices or atmospheric conditions
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