Astronomical Phenomena for the Year 2021

Abstract

This small, useful booklet contains general interest material preprinted from The Astronomical Almanac. It is published jointly by the U.S. Naval Observatory and Her Majesty's Nautical Almanac Office two years in advance of its date. It includes such things as dates for Solar equinoxes, solstices, phases of the Moon, eclipse maps, dates for various planetary phenomena visibility and magnitudes of the planets, dates for some religious and civil holidays, chronological eras and cycles, the equation of time and declination of the Sun, sunrise set, moonrise set times, and the position of Polaris and Octantis, and international time zones.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2018
Accession Number
AD1107545

Entities

Organizations

  • United States Naval Observatory

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Air Navigation
  • Altitude
  • Astronomical Phenomena
  • Atlantic Ocean
  • Celestial Mechanics
  • Eclipses
  • Ephemerides
  • Governments
  • Intellectual Property
  • Islands
  • Jet Propulsion
  • Latitude
  • Longitude
  • Lunar Eclipses
  • Navigation
  • North America
  • Observatories
  • Pacific Ocean
  • Solar Eclipses
  • United Kingdom
  • United States
  • United States Government

Readers

  • Library and Information Science/ Studies, Southeast Asia Studies, Bibliography of Vietnam and Lao Studies.
  • Space Exploration and Orbital Mechanics.
  • Strategic Security Studies