Click the Office Button and choose Word Options. Select the Advanced category and, in the Editing options section, select the Keep track of formatting checkbox. Select the Mark formatting inconsistencies checkbox. Click OK.
Another way to see this difference is to notice that, relative to the stars, the Sun appears to move around Earth once per year. Therefore, there is one fewer solar day per year than there are sidereal days.
The sidereal day is the time it takes for the Earth to complete one rotation about its axis with respect to the âfixedâ stars. By fixed, we mean that we treat the stars as if they were attached to an imaginary celestial sphere at a very large distance from the Earth.idereal Day. A sidereal day is the time it takes for the Earth to rotate about its axis so that the distant stars appear in the same position in the sky. A solar day is the time it takes for the Earth to rotate about its axis so that the Sun appears in the same position in the sky.