sun-position_grena3

Calculate the Sun-Position:
https://www.npmjs.com/package/sun-position_grena3

1-install the Module with your Terminal:
npm i sun-position_grena3

2-import into your JavaScript Project:
//for Date and Time in UTC-Format
var moment = require('moment-timezone');

//the calculation Class
const Test_Grena3 = require("sun-position_grena3");

3-Parameters you will need:
-Date in UTC-Format:
var mom = moment.utc("2018-02-07 14:00:00", "YYYY-MM-DD HH:mm:ss");
-AzimuthZenithAngle (return value)
var aza = Test_Grena3.AzimuthZenithAngle2;
-Latitude/Longitude (number)
var lat = 51.47625;
var long = 7.24274;
-DeltaT (number) //the time difference between UT and TT; e.g.: 69
-Pressure (number) //e.g.: 1000
-Temperature (number) //in Celsius, e.g.: 20

4-calculate:
aza = calcSunPos.calculateSolarPosition(mom, lat, long, 69, 1000, 20);

5-full Example to use in JavaScript:
var moment = require('moment-timezone');
const Test_Grena3 = require("sun-position_grena3");
var aza = Test_Grena3.AzimuthZenithAngle2;
const calcSunPos = new Test_Grena3(0,0);

var mom = moment.utc("2018-02-07 14:00:00", "YYYY-MM-DD HH:mm:ss");
var lat = 51.47625;
var long = 7.24274;

aza = calcSunPos.calculateSolarPosition(mom, lat, long, 69, 1000, 20);
console.log("Azimuth: " + aza.getAzimuth());
console.log("ZenithAngle: " +aza.getZenithAngle());