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Autumnal Equinox Northern Hemisphere

The Autumnal Equinox is one of the two days in the calendar year when day and night hours are almost equal to one another; it is also the first day […]

Spring Equinox Southern Hemisphere

The Spring (Vernal) Equinox is one of the days in the calendar year when day and night hours are almost equal to one another; it is also the first of […]