The British and American editions of The Nautical Almanac, which are identical in content, are produced jointly by H. M. Nautical Almanac Office, part of the United Kingdom Hydrographic Office, under the supervision of S. A. Bell and C. Y. Hohenkerk, and by the Nautical Almanac Office, United States Naval Observatory, under the supervision of S. E. Urban and М. X Stollberg, to the general requirements of the Royal Navy and of the United States Navy. The Almanac is printed separately in the United Kingdom and in the United States of America.
The data in this almanac, on written application, may be made available for reproduction. It can be made available in a form suitable for direct photographic reproduction, to the appropriate almanac-producing agency in any country; language changes in the headings of the ephemeral pages can be introduced, if desired, during reproduction. Under this arrangement, this almanac, with minor modifications and changes of language, has been adopted by a number of foreign countries.
A new section on Polar Phenomena is included in this volume. This gives graphs of the semiduration of sunlight, twilight and moonlight at high latitudes from which the times of rising and setting of the Sun and Moon and the times of civil twilight can be calculated. An explanation and examples are also given.
LIST OF CONTENTS
Altitude correction tables for Sun, stars, planets Additional refraction corrections for non-standard conditions Title page, preface, etc.
Phases of the Moon
Planet notes and diagram
Daily pages: Ephemerides of Sun, Moon, Aries and planets; sunrise, sunset, twilights, moonrise, moonset, etc.
Stars: SHA and Dec of 173 stars, in order of SHA (accuracy CK1)
Polaris (Pole Star) tables
Sight reduction procedures; direct computation
Concise sight reduction tables
Form for use with concise sight reduction tables
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
Same as pages A2 and xxxiii