Using the Julian calendar, the autumnal equinox, vernal equinox, and seasons were arriving 11 minutes earlier each year.
利用凯撒制定的历法，每年的春秋分日和四季都会提前11分钟。
The autumnal equinox and vernal equinox aren't even midway between the solstices, which are the days of greatest and least light of the year, she added.
春秋分日甚至不是二至日(夏至：一年中光照最强烈的时候。冬至反之)的中分界点，她补充道。
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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