1. A solar day is four minutes longers than a sidereal day.

2. Some experiment data, which are captured in a solar day and a misty day, are utilized to verify the validity of our method.

3. A sidereal day is shorter than a mean solar day by 3 minutes and 56 seconds.

4. A sidereal day is about 4 minutes shorter than a solar day.

5. In everyday life, in order to level the length of the solar day basis.

6. The daily rising of the sun provided a short unit of time, the solar day .