time sight
noun1
An observation by sextant of the altitude of a celestial body in order to determine the time and hence the longitude.
2
A set of observations in order to determine the time that is usually conducted with a transit instrument.
- The GHA of the sun at the time of your LAN is your longitude. (Of course, GHAs greater than 180° mean the longitude is east and it would be written as 360° - GHA.) Some navigators call this a time sight.2007, John Karl, Celestial Navigation in the GPS Age, page 71: