Length of Day Calculator

[Bert Mariani]

Happy New Year Mahmoud et ALL !!

As part of the "Orbital Series"

Attached is a 

    - Length-Of-Day-Calculator.ring

It is based on Spherical Trigonometry

It depends on the Earth Tilt  23.44 degrees

And the Earth position in its Orbit

It will calculate the length of day based on Latitude

  -  Enter Latitude  

     Click -  Calc-Latitude

       

  - Select City from drop down

     Click - Calc-DayLength

 - To display entries for every day in the entire year

    Click  -  Print-Year

 - To draw a chart that start with March 21 - Aries

    Click  - Draw-Year

Check if your City is in the Drop Down list

See the values for current date

Try   Reykjavik in Iceland

Try Latitude 75 - Land of the Midnight Sun

[Mahmoud Fayed]

Hello Bert

Happy New Year to you, too :D

Thanks for sharing the sample :D

Added to GitHub in this commit: Add: samples/General/Orbital/Length-Of-Day-Calculator.ring by Bert Ma… · ring-lang/ring@1ca0fb7

Greetings,

Mahmoud

[Mahmoud Fayed]

Hello Bert

I did a little updated in this commit:  Update samples/General/Orbital/Length-Of-Day-Calculator.ring - Remove… · ring-lang/ring@9b4a2db

To avoid unnecessary call to the exec() function which produce runtime error at the end of the program

Greetings,

Mahmoud

On Wednesday, December 31, 2025 at 8:34:20 PM UTC+3 Bert Mariani wrote: