At a particular time, the vernal equinox passes through the celestial meridian of an observer. What is the sidereal time at that site?

Question

Quizplus · Accepted Answer

When the vernal equinox passes through the celestial meridian of an observer, the local sidereal time is 0 hours (midnight) exactly. Sidereal time is measured by the position of the vernal equinox relative to the local meridian, not by the observer's latitude or the time of year.

At a Particular Time, the Vernal Equinox Passes Through the Celestial