Celestial Navigation · Time — GMT/UT
Celestial sights are reduced using which time as the entering argument for the Nautical Almanac?
- AGreenwich Mean Time (UT)✓ Correct
- BLocal zone time
- CApparent solar time
- DSidereal time at the ship
Explanation
The almanac is tabulated against GMT/UT. Zone time is converted to GMT by applying the zone description before entering the tables for GHA and declination.
Authority: The Nautical Almanac, use of tables; Bowditch (Pub. No. 9)
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