Editing 1878: Earth Orbital Diagram
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;Equinox / Solstice | ;Equinox / Solstice | ||
{{w|Equinox}} and {{w|Solstice}} have very different meanings: | {{w|Equinox}} and {{w|Solstice}} have very different meanings: | ||
− | *An Equinox is one of two instants in the year when the sun is exactly over the equator; the length of day and night are very nearly equal that day at all locations on the planet, and it is | + | *An Equinox is one of two instants in the year when the sun is exactly over the equator; the length of day and night are very nearly equal that day at all locations on the planet, and it is the first day of Spring or Autumn, depending on the time of year and in which hemisphere (Northern vs Southern) the observer is located. |
*A Solstice is one of two instants in the year when the sun's angle is maximally far from Earth's equator; when one occurs, the length of the day or night is shortest or longest (depending on whether one is in the northern or southern hemisphere), and (in the United States) it marks the first day of summer or winter. | *A Solstice is one of two instants in the year when the sun's angle is maximally far from Earth's equator; when one occurs, the length of the day or night is shortest or longest (depending on whether one is in the northern or southern hemisphere), and (in the United States) it marks the first day of summer or winter. | ||