NP314-24 Admiralty. The Nautical Almanac 2024. His Majesty’s Nautical Almanac Office

Книга на английском языке
The Nautical Almanac contains astronomical information to support bridge crews in routine and emergency celestial navigation, as well as the calculation of daylight hours and mandatory gyro checks. It is carried on every ship within the Royal Navy and is at the core of celestial navigational training courses worldwide.
The Nautical Almanac includes:
- Tabulations of the Sun, Moon, navigational planets and stars to help determine positions at sea when using a sextant
- Times of sunrise, sunset, twilights, moonrise and moonset, phases of the Moon and eclipses of the Sun and Moon to help bridge crews plan observations
- Interpolation and altitude correction tables, pole star tables and diagrams, and notes for the identification of stars and planets
- Information on standard times for countries around the world
- A concise set of sight reduction tables and sight reduction forms

Contents
Altitude correction tables for Sun, stars, planets
Additional refraction corrections for non-standard conditions
Title page, preface, etc.
Phases of the Moon
Calendars
Eclipses
Planet notes and diagram
Daily pages: Ephemerides of Sun, Moon, Aries and planets; sunrise, sunset, twilights, moonrise, moonset, etc.
Explanation
Standard times
Star charts
Stars: SHA and Dec of 173 stars, in order of SHA (accuracy 0:`1)
Polaris (Pole Star) tables
Sight reduction procedures; direct computation
Concise sight reduction tables
Form for use with concise sight reduction tables
Polar Phenomena
Semi-duration of sunlight and twilight Semi-duration of moonlight
Conversion of arc to time
Tables of increments and corrections for Sun, planets, Aries, Moon
Tables for interpolating sunrise, sunset, twilights, moonrise, moonset, Moon's meridian passage
Index to selected stars
Altitude correction tables for the Moon