United States Naval Observatory (USNO)

The United States Naval Observatory performs an essential scientific role for the United States, the Navy, and the Department of Defense. Its mission includes determining the positions and motions of the Earth, Sun, Moon, planets, stars and other celestial objects; providing astronomical data; determining precise time; measuring the Earth's rotation; and maintaining the Master Clock for the United States. Observatory astronomers formulate the theories and conduct the relevant research necessary to improve these mission goals. This astronomical and timing data, essential for accurate navigation and the support of communications on Earth and in Space, is vital to the Navy and Department of Defense. It is also used extensively by other agencies of the government, industry and the public at large.

The Observatory consists of four Scientific Departments: Astrometry, Astronomical Applications, Earth Orientation, and Time Service. Each Department is responsible for specific products and services tailored to their end-users within both the DoD and civilian worlds.

The Naval Observatory's Nautical Almanac Office computes and prepares the vital annual U.S. navigational publications, the Air Almanac and the Nautical Almanac. In addition, they carry on the essential research work of deriving improved values of the fundamental astronomical elements and embodying them in new tables of the celestial motions, publishing the Astronomical Phenomena and the Astronomical Almanac. These publications are produced in cooperation with Her Majesty's Nautical Almanac Office, United Kingdom Hydrographic Office.

To learn more about the U.S. Naval Observatory, visit their website.

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The Air Almanac 2019 (CD-ROM)
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The Air Almanac 2019 (CD-ROM)

The Air Almanac 2019 (CD-ROM)

Nautical Almanac for the Year 2019
Title:
Nautical Almanac for the Year 2019

Nautical Almanac for the Year 2019

Astronomical Almanac For The Year 2019
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Astronomical Almanac for the Year 2019

Astronomical Almanac For The Year 2019

The Air Almanac for the Year 2018
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The Air Almanac for the Year 2018

The Air Almanac for the Year 2018

Astronomical Phenomena For The Year 2020
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Astronomical Phenomena for the Year 2020

Astronomical Phenomena For The Year 2020

The Air Almanac 2018 (CD-ROM)
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The Air Almanac 2018 (CD-ROM)

The Air Almanac 2018 (CD-ROM)

The Nautical Almanac for the Year 2018
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The Nautical Almanac for the Year 2018

The Nautical Almanac for the Year 2018

Astronomical Almanac (paperback)
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Astronomical Almanac for the Year 2017 (Paperback)

Astronomical Almanac (paperback)

Astronomical Phenomena for the Year 2019
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Astronomical Phenomena for the Year 2019

Astronomical Phenomena for the Year 2019

The Air Almanac 2017
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The Air Almanac 2017 (PDF eBook)

The Air Almanac 2017

The Nautical Almanac for the Year 2017
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The Nautical Almanac for the Year 2017

The Nautical Almanac for the Year 2017

Astronomical Phenomena for the Year 2018
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Astronomical Phenomena for the Year 2018

Astronomical Phenomena for the Year 2018

Nautical Almanac For The Year 2016
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Nautical Almanac For The Year 2016

Nautical Almanac For The Year 2016

Astronomical Phenomena for the Year 2017
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Astronomical Phenomena for the Year 2017

Astronomical Phenomena for the Year 2017

The Air Almanac for the Year 2016
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The Air Almanac for the Year 2016 (PDF eBook)

The Air Almanac for the Year 2016

The Air Almanac 2015
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The Air Almanac 2015 (CD-ROM)

The Air Almanac 2015

Astronomical Almanac for the Year 2016
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Astronomical Almanac for the Year 2016

Astronomical Almanac for the Year 2016

Astronomical Phenomena for the Year 2016
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Astronomical Phenomena for the Year 2016

Astronomical Phenomena for the Year 2016

Astronomical Phenomena for the Year 2015
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Astronomical Phenomena for the Year 2015 (PDF eBook)

Astronomical Phenomena for the Year 2015

Nautical Almanac for the Year 2015
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Nautical Almanac for the Year 2015

Nautical Almanac for the Year 2015

Astronomical Almanac for the Year 2015 and Its Companion, The Astronomical Almanac Online: Data for Astronomy, Space Sciences, Geodesy, Surveying, Navigation and Other Applications
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Astronomical Almanac for the Year 2015 and Its Companion, The Astronomical Almanac Online: Data for Astronomy, Space Sciences, Geodesy, Surveying, Navigation and Other Applications

Astronomical Almanac for the Year 2015 and Its Companion, The Astronomical Almanac Online: Data for Astronomy, Space Sciences, Geodesy, Surveying, Navigation and Other Applications

The Nautical Almanac for the Year 2014
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The Nautical Almanac for the Year 2014

The Nautical Almanac for the Year 2014

Astronomical Almanac for the Year 2014 and Its Companion the Astronomical Almanac Online
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Astronomical Almanac for the Year 2014 and Its Companion the Astronomical Almanac Online

Astronomical Almanac for the Year 2014 and Its Companion the Astronomical Almanac Online

The Air Almanac 2013 (CD-ROM)
Title:
The Air Almanac 2013 (CD-ROM)

The Air Almanac 2013 (CD-ROM)

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