A time based on the Sun; usually the hour angle of the Sun plus 12 hours.
Time measured with respect to the Sun. See the tutorial on Time.
Time based on the rotation of the earth relative to the sun.
Time based on the revolution of the earth around the sun.
time measured directly from the position of the sun, see article on the sundial.
The period marked by successive crossing of the earth's meridian by the sun; the hour angle of the sun at a point of observance (apparent time) is corrected to true (solar) time by taking into account the variation in the earth's orbit and rate of rotation. Solar time and local standard time are usually different for any specific location.
Solar time is based on the idea that when the sun reaches its highest point in the sky, it is noon.