> For the complete documentation index, see [llms.txt](https://eleven-fifty-academy.gitbook.io/javascript-101-fundamentals/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://eleven-fifty-academy.gitbook.io/javascript-101-fundamentals/1-javascript-fundamentals/1-js-fundamentals/6-numbers-and-dates/dates.md).

# Dates

JavaScript does not inherently have a `date` data type, however you can utilize the `Date` object with its methods to create date and time.\
 JS stores dates as Unix Timestamps, giving the number in miliseconds since January 1, 1970, 00:00:00.\
&#x20;The `Date` object range is -100,000,000 to 100,000,000 days, relative to January 1, 1970, UTC.\ <br>

To create a `Date` object, type this:

```javascript
var dateObjectName = new Date([parameters]);
```

Where `dateObjectName` is the name of the `Date` that is created, it can serve as a new object or property.\ <br>

Calling `Date` without `new` returns a string representing the current date and time.\ <br>

## Challenge

Using the `Date` object, determine the date and time that is 100,000,000,000 miliseconds from January 1, 1970.\ <br>

Answer Code:

```javascript
var miliDate = new Date(100000000000); // Sat Mar 03 1973 04:46:40 GMT-0500 (EST)
```

## Date Object Properties

```javascript
Date.constructor() // Returns the function that created the Date object's prototype
Date.prototype() // Allows you to add properties and methods to an object
```

## Date Object Methods

```javascript
getDate() // Returns the day of the month (from 1-31)
getDay() // Returns the day of the week (from 0-6)
getFullYear() // Returns the year
getHours() // Returns the hour (from 0-23)
getMilliseconds() // Returns the milliseconds (from 0-999)
getMinutes() // Returns the minutes (from 0-59)
getMonth() // Returns the month (from 0-11)
getSeconds() // Returns the seconds (from 0-59)
getTime() // Returns the number of millseconds since midnight Jan 1, 1970, and a specific date
getTimezoneOffset() // Returns the time difference between UTC time and local time, in minutes
getUTCDate() // Returns the day of the month, accoridng to the universal time (from 1-31)
getUTCDay() // Returns the day of the week, according to the universal time (from 0-6)
getUTCFullYear() // Returns the year, according to the universal time
getUTCHours() // Returns the hour, according to the universal time (from 0-23)
getUTCMilliseconds() // Returns the milliseconds, according to the universal time (from 0-999)
getUTCMinutes() // Returns the minutes, according to the universal time (from 0-59)
getUTCMonth() // Returns the month, according to the universal time (from 0-11)
getUTCSeconds() // Returns the second, according to the universal time (from 0-59)
now() // Returns the number of milliseconds since midnight Jan 1, 1970
parse() // Parses a date string and returns the number of milliseconds since Jan 1, 1970
setDate() // Sets the day of the month of a date object
setFullYear() // Sets a year of a date object
setHours() // Sets the hour of a date object
setMilliseconds() // Sets the milliseconds of a date object
setMinutes() // Sets the minutes of a date object
setMonth() // Sets the month of a date object
setSeconds() // Sets the seconds of a date object
setTime() // Sets a date to a specified number of milliseconds after/before Jan 1, 1970
setUTCDate() // Sets the day of the month of a date object, according to universal time
setUTCFullYear() // Sets the year of a date object, according to universal time
setUTCHours() // Sets the hours of a date object, according to universal time
setUTCMilliseconds() // Sets the milliseconds of a date object, according to universal time
setUTCMinutes() // Sets the minutes of a date object, according to universal time
setUTCMonth() // Sets the month of a date object, according to universal time
setUTCSeconds() // Sets the seconds of a date object, according to universal time
toDateString() // Converts the date portion of the Date object into a readable string
toISOString() // Returns the date as a string, using the ISO standard
toJSON() // Returns the date as a string, using the JSON format
toLocaleDateString() // Returns the date portion of a Date object as a string, using locale conventions
toLocaleTimeString() // Returns the time portion of a Date object as a string, using locale conventions
toLocaleString() // Converst a Date object to a string, using locale conventions
toString() // Converts a Date object to a string
toTimeString() // Converts the time portion of a Date object to a string
toUTCString() // Converts a Date object to a string, according to universal time
UTC() // Returns the number of milliseconds in a date since midnight of Jan 1, 1970, according to universal time
valueOf() // Returns the primitive value of a Date object
```