白天和黑夜被分为均等数量的部分，所以除去昼夜平分点，白天和黑夜时间是不等的；当然，这些时长也因季节变化而变化。
Day and night were divided into the same number of parts, so that except at the equinoxes, days and night hours were unequal; and then of course the length of these hours varied with the seasons.
在这个时候，太阳直射赤道，南北半球昼夜平分。
At this time, the sunlight shines vertically on the equator, equally dividing the day and night in both the southern and northern hemispheres.
那一天被叫做昼夜平分日（equinoctialhours）。
As such hours as we know them were called equinoctial hours.
从我们的行星看去，在昼夜平分点时的土星环的面貌非常的狭窄和有限。
Seen from our planet, the view of Saturn's rings during equinox is extremely foreshortened and limited.
从我们的行星看去，在昼夜平分点时的土星环的面貌非常的狭窄和有限。
Seen from our planet, the view of Saturn's ringsduring equinox is extremely foreshortened and limited.
木星到达昼夜平分点的原始照片被美国卡西尼号宇宙飞船拍摄到并发回地球。
Raw images of the moment Saturn reached its equinox have been beamed to Earth by the US Cassini spacecraft.
昼夜平分点健身中心提供了20多种营地，今年夏天在课程表里增加了四种壶铃健身。
Equinox fitness centers offer some 20 varieties of boot camp and, this summer, added four types of kettle bell workouts to their schedules.
昨天是春分，谚语中说“春分秋分，日夜平分”，这一天昼夜长短相同。
Yesterday was spring equinox and as the old saying goes that in spring equinox and autumnal equinox, the length of day and night are equal "."
昨天是春分，谚语中说“春分秋分，日夜平分”，这一天昼夜长短相同。
Yesterday was spring equinox and as the old saying goes that in spring equinox and autumnal equinox, the length of day and night are equal "."
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