Added Date Object Guide to Javascript Guides (#36006)

guide/english/javascript/date-object/index.md

@@ -0,0 +1,48 @@
+---
+title: Date Object
+---
+
+# What is the Date Object?
+The Date Object in JavaScript lets us work with dates. We can use it to get the current time and date, or create an object that stores a time a date of your choosing.
+
+# How to Create a Date Object
+There are four ways to create a Date Object:
+
+1) To get the current time:
+```js
+    var currentDate = new Date();
+```
+
+2) To create a new date object with a specified date and time
+```js
+    var specifiedDate = new Date(2019, 4, 29, 15, 0, 0, 0);
+```
+This will return
+```
+    Wed May 29 2019 15:00:00 GMT-0400 (Eastern Daylight Time)
+```
+The structure is (year, month, day, hour, minute, second, millisecond).
+
+NOTE: The months start from 0.
+
+3) Creating object using milliseconds
+```js
+    var millisecondDate = new Date(0);
+```
+
+This returns the milliseconds passed into date, in this case 0, plus time zero. Time zero for the Date Object is January 1st, 1970.
+
+In a day there's 86,400,000 milliseconds so:
+```js
+    var millisecondDate = new Date(86400000);
+```
+will return the day after date zero so January 2nd, 1970.
+
+4) To create a Date Object from a string:
+```js
+    var stringDate = new Date("May 29, 2019 15:00:00");
+```
+this returns
+```
+    Wed May 29 2019 15:00:00 GMT-0400 (Eastern Daylight Time)
+```