However, the Midheaven sign for a given sidereal time will remain the " same " regardless of the latitude of the location for which the chart is cast.
22.
Local sidereal time at any locality differs from the Greenwich sidereal time value of the same moment, by an amount that is proportional to the longitude of the locality.
23.
Local sidereal time at any locality differs from the Greenwich sidereal time value of the same moment, by an amount that is proportional to the longitude of the locality.
24.
From a given observation point, a star found at one location in the sky will be found at the same location on another night at the same sidereal time.
25.
Both solar time and sidereal time make use of the regularity of Earth's rotation about its polar axis, solar time following the Sun while sidereal time roughly follows the stars.
26.
Both solar time and sidereal time make use of the regularity of Earth's rotation about its polar axis, solar time following the Sun while sidereal time roughly follows the stars.
27.
The coordinate transformation between these two systems is described to good approximation by ( apparent ) sidereal time, which takes into account variations in the Earth's axial rotation ( length-of-day variations ).
28.
Beneath the planisphere, three small dials show hours, minutes, and seconds of Greenwich Mean Time, and three similar and balancing dials give local sidereal time in degrees, minutes, and seconds of arc.
29.
When it is then set to an observer's Local Mean Sidereal Time then a star will transit the meridian ( passing directly north or south ) at the sidereal time of the star's Right Ascension.
30.
When it is then set to an observer's Local Mean Sidereal Time then a star will transit the meridian ( passing directly north or south ) at the sidereal time of the star's Right Ascension.
