Declination and Greenwich Hour Angle (GHA) are provided at hourly intervals to a precision of 0.1 arcminute .
Two-page spreads covering three-day periods. One side tabulates Aries, navigational planets, and 57 primary stars; the opposite side covers the Sun and Moon. nautical almanac 2008 pdf
The United States began publishing its own Nautical Almanac in 1852. Declination and Greenwich Hour Angle (GHA) are provided
remains a foundational resource for maritime celestial navigation, providing the critical astronomical data needed to determine a ship's position at sea. While modern GPS has become the primary tool for mariners, the 2008 Almanac continues to be used by students for training and by professionals as a vital backup. Purpose and Core Function and 57 primary stars