time sight
A method used in celestial navigation to determine longitude by measuring the altitude of a celestial body and comparing it to a known reference time.
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Definition
C1Navigation
(technical)A technique for finding longitude by measuring the altitude of a celestial body and comparing it to a known reference time.
Example
- Sailors used a time sight to determine their position at sea.
C1Astronomy
(technical)An observation of a celestial body's altitude to ascertain the time and, subsequently, the observer's longitude.
Example
- Astronomers performed a time sight to calculate the exact time of the observation.
Similar
Terms that have similar or relatively close meanings to "time sight":
in sighton sightsecond sighta fuck sighttime of daytell timevision outkeep sight of