恒星日(较标准日约短四分钟);
you can see for the sidereal day, the earth has gone through one complete rotation (with respect to the background stars).
你可以看到太阳日就是地球自转完整一圈的时间(参照某颗背景恒星)。
a sidereal day is about 4 minutes shorter than a solar day .
一个恒星日比一个太阳日大约短4分钟。
A sidereal day is shorter than a mean solar day by 3 minutes and 56 seconds.
恒星日比平均太阳日短三分五十六秒。
A sidereal day is about 4 minutes shorter than a solar day.
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