Equinox happens twice a year. The Vernal equinox is also called
the Spring equinox in the Northern Hemisphere. The 2014 Vernal
equinox was on March 20, 12:57 P.M. EDT.
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The vernal equinox marks the beginning of spring in the Northern Hemisphere.
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The vernal equinox marks the beginning of spring, on or around
March 21st.
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After the Vernal Equinox the days get shorter as winter
approaches.