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| Q. |
An Equinox is when: |
| A. | Day and night are of equal length |
| B. | Day is of the shortest duration during the year |
| C. | Day is of the longest duration in the year |
| D. | Day when maximum rainfall of the year occurs |
| Answer» A. Day and night are of equal length | |
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Explanation: An equinox is an astronomical event in which the plane of Earth's equator passes through the center of the Sun, which occurs twice each year, around 20 March and 23 September. On an equinox, day and night are of approximately equal duration all over the planet. They are not exactly equal, however, due to the angular size of the sun and atmospheric refraction. |
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