NEW! Astronomical Almanac for the Year 2023

March 23, 2023

Calling all astronomers and astronomy enthusiasts! The Astronomical Almanac for the Year 2023 is now available from the U.S Government Bookstore.

The Astronomical Almanac contains a wide variety of both technical and general astronomical information. It is published jointly by the U.S. Nautical Almanac Office at the U.S. Naval Observatory and Her Majesty’s Nautical Almanac Office in the UK, and contains data supplied by many scientists from around the world.

A brief overview of the data available within this yearly updated astronomical resource includes:

  • Phenomena – information on the seasons, phases of the Moon, configurations of the planets, eclipses, etc.                     
  • Time-Scales and Coordinate Systems – calendar information, relationships between time scales, universal, and, sidereal times, Earth rotation angle,
  • Sun – Moon – Planetsdetailed positional information,
  • Stars and Stellar Systemsmean places for bright stars, double stars, UBVRI standards,
  • Tables and DataJulian dates, selected astronomical constants, relations between time scales.

The Astronomical Almanac is a great resource for commercial as well as the military to strengthen safer travel and further assist in navigation by both air and sea.

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About the author: Blogger contributor Ed Kessler is a Promotions Specialist in GPO’s Publications and Information Sales Office.

Images and additional content provided by Government Book Talk Editor Trudy Hawkins. Trudy is the Senior Marketing & Promotions Specialist in GPO’s Publication & Information Sales Office supporting the U.S. Government Online Bookstore (

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