Ecliptic to Equatorial
We created a Ecliptic to Equatorial Astronomy Calculator.
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Astronomy Calculator
Date to Day Astronomy Calculator
The next Astronomy Calculator I have created is a Date to Day calculator. This calculator converts a date to the number of days in that year.
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Leap Year Astronomy Calculator
I have created the second Astronomy Calculator which is for Leap Year. The calculations are based on calculations from the book Astronomical Algorithms by Jean Meeus.
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Date of Easter Astronomy Calculator
I have created the first Astronomy Calculator which is the Date of Easter. The calculations are based on the book Practical Astronomy with you Calculator or Spreadsheet by Peter Duffett-Smith and Jonathan Zwart. The method the authors showed in their book is based on a method devised in 1876 which was in Butcher’s Ecclesiastical Calendar.
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Astronomy Calculator Reasons and Goals
Astronomy Calculator was an inspiration. Unfortunately, I get remember the exact circumstances for that inspiration. One part probably has to do when I was brainstorming about building mobile astronomy apps and realized it would be cool to display the time of sunset. I did some Google searching and couldn’t find a service that I could
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