https://github.com/persian-calendar/equinox-research

Aggregate and survey different implementation of equinox calculations
https://github.com/persian-calendar/equinox-research

equinox iran

Last synced: 4 days ago
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Aggregate and survey different implementation of equinox calculations

• Host: GitHub
• URL: https://github.com/persian-calendar/equinox-research
• Owner: persian-calendar
• Created: 2020-06-11T21:22:42.000Z (over 5 years ago)
• Default Branch: main
• Last Pushed: 2024-10-30T06:16:13.000Z (about 1 year ago)
• Last Synced: 2025-01-02T08:45:35.247Z (11 months ago)
• Topics: equinox, iran
• Language: JavaScript
• Size: 11.7 KB
• Stars: 0
• Watchers: 5
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

          
Aggregate knowledge around equinox calcuation so we can be more confident about

a final implementation.

[iran-ground-truth.json](/iran-ground-truth.json), Spring equinox times

provided in Iran's time by calendar.ut.ac.ir, we like to have an implementation

matching to it.

Implementations:

* https://github.com/xyproto/calendar/blob/master/equinox.go

  which it self is a port of http://jgiesen.de/astro/astroJS/seasons/seasons.js

  used on http://jgiesen.de/astro/astroJS/seasons/

  Our current https://github.com/persian-calendar/equinox is based on it

* https://stellafane.org/misc/equinox.html this apparently matches better with

  Iran provided ones? ([Dart](https://github.com/shawnlauzon/meeus) & [Go](https://github.com/soniakeys/meeus) implementation from the same [book](https://www.amazon.com/Astronomical-Algorithms-Jean-Meeus/dp/0943396611))

* (feel free to add more)