夏天的时间长，冬天的时间短；只有在春秋分点，白天和黑夜的时间才相等。
Summer hours were long, winter ones short; only at the spring and autumn equinoxes were the hours of daylight and darkness equal.
2011年的春秋分和冬夏至。
别被秋分日昼夜长短相等的概念愚弄了。
Don't be fooled by the notion that on the autumnal equinox the length of day is exactly equal to the length of night.
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