Clear Sky Tonight
astronomy for the rest of us

Astronomy Calculator
Astronomy Calculator is a series of astronomical calculations.
Web and iPhone Applications
Web and iPhone Applications are a suite of astronomy applications for the web and iPhone.


Below are a few of our favorite calculators. These calculators are part of the Astronomy Calculator and include Date of Easter, Leap Year and Local Sidereal Time to Greenwich Sidereal. More will be added as we create them. Click the icon below to view the calculators.


Clear Sky Tonight
astronomy for the rest of us



Clear Sky Tonight has a number of areas of interest. Below you will find interesting information from our Blog and our News. We also have a Forum. We have created a number of articles about astronomy, the Night Sky, Telescopes and Astrophotography.
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Postings about one person's journey to learn more about astronomy more
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Discuss astronomy, telescopes, astrophotography, etc. with people who share your interests more
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News about Clear Sky Tonight, Astronomy Calculator and our web and iPhone apps more
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Learn more about our web and iPhone apps more
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Get support for our web and iPhone apps or the Astronomy Calculator more
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Read articles about astronomy, telescopes, astrophotography, etc. more
Astronomy compels the soul to look upwards and leads us from this world to another.
Plato
Astronomy taught us our insignificance in Nature.
Ralph Waldo Emerson
My goal is simple. It is a complete understanding of the universe, why it is as it is and why it exists at all...  We see the universe the way it is because if it were different, we would not be here to observe it.
Stephen Hawking




Clear Sky Tonight - astronomy for the rest of us

Check out our mobile version of Astronomy Calculator.

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