Planetary

Planetary calculates planetary alignments for a given date, as viewed from Earth (geocentric).

Installation

1. Install Node, if you haven't already:

http://nodejs.org/

2. NPM install Planetary:

npm install planetary

Example

var planetary = require('planetary');
var now = new Date();
var maxSeparation = 8; // maximum degrees of separation of planets. Default is 5.
var alignments = planetary.alignments( now, maxSeparation );

The result is an array of planetary alignments for the given date. Each alignment is, itself, an array, listing the planets in the alignment.

Source

Derived from https://github.com/lhartikk/AstroBuild