@mrspade/moontool v0.0.3

moontool

Get information about the moon, in javascript.

The source of algorithms comes from Moontool for Windows, which the source of the application has been copied to this repo in /original for safekeeping/archival.

Methods available

Examples

getMoonInfo(new Date());

// Result
{
    angularDiameterInDeg: 0.5227003811621781,
    distanceInKm: 381017.8168555941,
    distanceToSun: 149979823.99030265​,
    moonAgeInDays: 8.807861270471863​, // min 0, max 29.53
    moonIllumination: 0.6493074320692747​, // 0 new moon, 1 full moon
    moonPhase: 0.298262298998364​, // percentage of the current phase of the moon (new moon (0) > full moon > new moon (1))
    sunAngularDiameter: 0.5317725210369415
}

getEaster(2020); // -> Sun Apr 12 2020

Usage

This package works both in CJS / ESM formats.

const moontool = require("@mrspade/moontool");
moontool.getEaster(2020);

// or

import { getMoonInfo } from "@mrspade/moontool";
getMoonInfo(new Date());

Building locally

npm i

Package

Ensure you have ran npm i

Run npm run build