Clear Sky Tonight Clear Sky Tonight (CST) is an astronomy community for the rest of us. It is a place to learn about astronomy and discuss astronomy with others who share your interest. It is also a place learn more about our web and mobile applications and use the Astronomy Calculator.

Enjoy your experience!

Web and iPhone Apps We are developing single function, utility astronomy applications for the web and iPhone that make it easy and simple to learn about the moon, planets, stars, sun and clouds. They are to help the professional, casual astronomer or the parent who wants to show their children the night sky. Go

Astronomy Calculator Astronomy Calculator is a series of calculators and web services that perform specific astronomical calculations to determine many values. We are currently developing these calculators and web services. Go

Clear Sky Tonight

astronomy for the rest of us

Astronomy Calculator

Astronomy Calculator is a series of astronomical calculations.

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.

Date of Easter

Leap Year

Sunrise and Sunset

Twilight Astronomical

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.

Blog

Postings about one person's journey to learn more about astronomy more

Forum

Discuss astronomy, telescopes, astrophotography, etc. with people who share your interests more

News

News about Clear Sky Tonight, Astronomy Calculator and our web and iPhone apps more

Projects

Learn more about our web and iPhone apps more

Support

Get support for our web and iPhone apps or the Astronomy Calculator more

Articles

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

Astronomy Calculator

astronomy for the rest of us

Calendar

Time

Coordinate System

Modification

Sun

Solar System

Clear Sky Tonight - astronomy for the rest of us

Website Updates

Weather Camera - We have been working on setting up a weather camera on our Woicik personal website. We have a Woicik Current Weather image posted every 5 minutes along with a Woicik Weather Blog which contains a daily time-lapsed weather video.
Website Launch - We launched this website.

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