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 * Home
 * Astronomy Calculator »
   * Calendar
   * Time
   * Coordinate
   * Modification
   * Sun
   * Solar System
   * Moon
 * Projects »
   * Apps
   * Astronomy Calculator
   * Support
 * Blog
 * Forum
 * News »
   * Links
 * Articles »
   * Astronomy
   * Night Sky
   * Telescopes
   * Astrophotography
 * Donate



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

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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

New Moon

Full Moon


Moon Phase

Moonrise and Moonset

Lunar Eclipse






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

 * Date of Easter
 * Leap Year
 * Date to Day
 * Calendar Date to Julian Date
 * Julian Date to Calendar Date
 * Day of Week from Julian Date
 * Day of Week


TIME

 * Time to Decimal
 * Decimal to Time
 * Local Time to Universal Time
 * Universal Time to Local Time
 * Universal Time to Greenwich Sidereal Time
 * Greenwich Sidereal Time to Universal Time
 * Greenwich Sidereal Time to Local Sidereal Time
 * Local Sidereal Time to Greenwich Sidereal Time


COORDINATE SYSTEM

 * Angle Degrees to Decimal Degrees
 * Decimal Degrees to Angle Degrees
 * Right Ascension to Hour Angle
 * Hour Angle to Right Ascension
 * Equatorial to Horizon
 * Horizon to Equatorial
 * Mean Obliquity of the Ecliptic
 * Ecliptic to Equatorial
 * Equatorial to Ecliptic
 * Equatorial to Galactic
 * Galactic to Equatorial

--------------------------------------------------------------------------------


MODIFICATION

 * Angle between two celestial objects
 * Rising and Setting
 * Precession
 * Nutation
 * Aberration
 * Refraction
 * Parallax
 * Heliographic
 * Carrington Rotation Number
 * Selenographic Moon
 * Selenographic Sun


SUN

 * Sun Longitude
 * Sun Position
 * Sun Distance
 * Sun Angular Size
 * Sunrise and Sunset
 * Twilight Civil
 * Twilight Nautical
 * Twilight Astronomical
 * Equation of Time
 * Solar Elongation


SOLAR SYSTEM

 * Mercury Position
 * Venus Position
 * Mars Position
 * Jupiter Position
 * Saturn Position
 * Uranus Position
 * Neptune Position
 * Mercury Visual
 * Venus Visual
 * Mars Visual
 * Jupiter Visual
 * Saturn Visual
 * Uranus Visual
 * Neptune Visual
 * Comets

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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.



Community
 * Blog
 * Forum

Social
 * Facebook
 * Twitter
 * YouTube
 * Instagram
 * Pinterest

About us

Clear Sky Tonight is an astronomy community.
Donate

Please consider donating to support the operation of this community.
Contact
 * Contact us
 * 
   
 * Clear Sky Tonight
 * info@clearskytonight.com



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 * Copyright © 2024 | Clear Sky Tonight| All rights reserved
 * Privacy Policy | Disclaimer | Cookies | Terms and Conditions


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