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The swiss replica watch so-called "time difference", referring to mean solar time based on real celestial bodies with the time difference between the stars. Mean solar time that is commonly used when the meter indicates time, also known as the average time. In fact the length of day is not equal. The elderly 24 hours, 14 minutes, shorter only 23 hours and 44 minutes. People to the average of 24 hours a day, to the convenience of daily life. Sidereal time is not measured when the sun is the standard to another location subject to a fixed star, a time of day and night for 23 hours, 56 minutes and 41 seconds. This method is more accurate for astronomy and space science, but for the life side and will be out of touch, a lot of inconvenience. Average time and sidereal time only four times each year, exactly the same, the rest are Fake watch different.