@hebcal/solar-calc/src/solarCalc.js

A sunrise/sunset/moonrise/moonset calculator - fork

import {Sun} from './sun.js';

const degreesBelowHorizon = {
  sunrise: 0.833,
  sunriseEnd: 0.3,
  twilight: 6,
  nauticalTwilight: 12,
  night: 18,
  goldenHour: -6
};

export class SolarCalc {
  constructor(date, latitude, longitude) {
    this.date = date;
    this.lat = latitude;
    this.longitude = longitude;

    this.sun = new Sun(date, latitude, longitude);
  }

  get solarNoon() {
    return this.sun.solarNoon;
  }

  get sunrise() {
    return this.sun.timeAtAngle(degreesBelowHorizon.sunrise, true);
  }

  get sunset() {
    return this.sun.timeAtAngle(degreesBelowHorizon.sunrise);
  }

  get sunriseEnd() {
    return this.sun.timeAtAngle(degreesBelowHorizon.sunriseEnd, true);
  }

  get sunsetStart() {
    return this.sun.timeAtAngle(degreesBelowHorizon.sunriseEnd, false);
  }

  get civilDawn() {
    return this.sun.timeAtAngle(degreesBelowHorizon.twilight, true);
  }

  get dawn() {
    return this.civilDawn;
  }

  get civilDusk() {
    return this.sun.timeAtAngle(degreesBelowHorizon.twilight, false);
  }

  get dusk() {
    return this.civilDusk;
  }

  get nauticalDawn() {
    return this.sun.timeAtAngle(degreesBelowHorizon.nauticalTwilight, true);
  }

  get nauticalDusk() {
    return this.sun.timeAtAngle(degreesBelowHorizon.nauticalTwilight, false);
  }

  get nightStart() {
    return this.astronomicalDusk;
  }

  get astronomicalDusk() {
    return this.sun.timeAtAngle(degreesBelowHorizon.night, false);
  }

  get astronomicalDawn() {
    return this.sun.timeAtAngle(degreesBelowHorizon.night, true);
  }

  get nightEnd() {
    return this.astronomicalDawn;
  }

  get goldenHourStart() {
    return this.sun.timeAtAngle(degreesBelowHorizon.goldenHour, false);
  }

  get goldenHourEnd() {
    return this.sun.timeAtAngle(degreesBelowHorizon.goldenHour, true);
  }
}