Astronomy Calculator is a series of astronomical calculations.
Web and iPhone Applications are a suite of astronomy applications for the web and iPhone.
Astronomy compels the soul to look upwards and leads us from this world to another.
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.
Clear Sky Tonight - astronomy for the rest of us
Check out our mobile version of Astronomy Calculator.
- Angle Degrees to Decimal Degrees
- Decimal Degrees to Angle Degrees
- Right Ascension to Hour Angle
- Hour Angle to Right Ascension
- 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
- Universal Time to Local Time
- Local Time to Universal Time
- Decimal to Time
- Time to Decimal
- Day of Week
- Day of Week from Julian date
- Julian Date to Calendar Date
- Calendar Date to Julian Date
- Date to Day - We have created our third Astronomy Calculator to convert a date to the day number.
- Leap Year - We have created our second Astronomy Calculator to figure out what is a Leap Year.
- Date of Easter - We have created our first Astronomy Calculator to figure out what the date of Easter is.
- 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. You can read more about the setup and configuration on the Clear Sky Tonight blog with the category weather.
- Website Launch - We launched this website.