Celestial Navigation · The Nautical Almanac
The 'Increments and Corrections' (yellow) pages of the Nautical Almanac are used to:
- AInterpolate GHA and declination for the minutes and seconds of the observation✓ Correct
- BCorrect the sextant for index error
- CConvert true bearings to compass bearings
- DFind the times of sunrise and sunset
Explanation
The daily pages give GHA and declination at whole hours of UT. The Increments and Corrections pages provide the additional change for the minutes and seconds of the sight, plus the v and d corrections.
Authority: Nautical Almanac
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