Earth Day
Earth
Day reminds the people of the world of the need for continuing care
which is vital to Earth's survival. Earth Day is celebrated on the
vernal equinox, the time when the Sun crosses the equator making
night and day of equal length in all parts of the Earth.
The vernal equinox was observed as the beginning of a new year
in ancient China, England, Persia (Iran), Egypt, North and South
America. At the moment of the equinox, the sun is setting at the
South Pole and rising at the North Pole. On the equator at noon
you will cast no shadow.
