Change Readme

README.md

@@ -1,2 +1,17 @@
 # calculation-of-sun
 Sun calculation fully based on formula from http://aa.quae.nl/en/reken/zonpositie.html
+
+## Warning
+This program is not really accurate about the calculation. For the sunrise and sunset, the error value is about 2 minutes miss from the actual time. For the Altitude the error value is near 0.6 degrees and the azimuth as well.
+
+# Install with npm
+'npm install calculation-ofsun'
+
+# Use
+'''jvascript
+    // getSunInformation parameter: Date, Latitude, Longtitude
+
+    const cls = require('calculation-ofsun')
+    console.log(cls.getSunInformation(new Date(), 33, 3))
+    
+'''

dist/solar-calculation.js

@@ -36,9 +36,9 @@ class Sunpositioning {
             C6: 0,
             EC: 0.0000
         };
-        this.earth_perihelion = 102.94719;
-        this.earth_obliquity = 23.44 * (Math.PI / 180);
-        this.earth_obliquity_degrees = 23.44;
+        this.earth_perihelion = 102.9373;
+        this.earth_obliquity = 23.4393 * (Math.PI / 180);
+        this.earth_obliquity_degrees = 23.4393;
         this.earth_sideral_time = {
             at_zero_long: 280.1470,
             rate_of_change: 360.9856235
@@ -46,6 +46,10 @@ class Sunpositioning {
 
     }
 
+    /*
+        @function
+        Get Information of sun by giving a date, latitude and longtitude
+    */
     getSunInformation(date, lat, long) {
         this.CLIENT_JD = this.dateToJD(date);
         this.CLIENT_LATITUDE = lat;
@@ -184,5 +188,4 @@ class Sunpositioning {
         }
     }
 }
-
-module.exports = Sunpositioning;
+module.exports = new Sunpositioning();

test.js

@@ -1,13 +1,2 @@
 const a = require('./dist/solar-calculation');
-let b = new a();
-let lat = 3.597031;
-let long = 98.678513;
-function JDtoDate(jd) {
-    let d = new Date((jd + 0.5 - 2440588) * (1000 * 60 * 60 * 24))
-    console.log(d);
-    return d.toString();
-  }
-let sff = b.getSunInformation(new Date(), 3.597031, 98.678513)
-console.log(sff.clientJD)
-console.log(JDtoDate(sff.sunset));
-console.log(sff)
+console.log(a.getSunInformation(new Date(), 52, 5));