The autumnal equinox and vernal-or spring-equinox are also the only days of the year when a person standing on the Equator can see the sun passing directly overhead.
春秋分日还是一年中唯一的两天，人站在赤道，可以看到太阳从头顶正上方经过。
The autumnal equinox and vernal-or spring-equinox are also the only days of the year when a person standing on the Equator can see the sun passing directly overhead.
春秋分日还是一年中唯一的两天，人站在赤道，可以看到太阳从头顶正上方经过。
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