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# dayOfQuarter

> Determine the day of the quarter.

<section class="usage">

## Usage

```javascript
var dayOfQuarter = require( '@stdlib/time/day-of-quarter' );
```

#### dayOfQuarter( \[month\[, day, year]] )

Returns the day of the quarter.

```javascript
var num = dayOfQuarter();
// returns <number>
```

By default, the function returns the day of the quarter for the current date (according to local time). To determine the day of the quarter for a particular day, provide `month`, `day`, and `year` arguments.

```javascript
var num = dayOfQuarter( 12, 31, 2016 );
// returns 92
```

A `month` may be either a month's integer value, three letter abbreviation, or full name (case insensitive).

```javascript
var num = dayOfQuarter( 12, 31, 2016 );
// returns 92

num = dayOfQuarter( 'dec', 31, 2016 );
// returns 92

num = dayOfQuarter( 'december', 31, 2016 );
// returns 92
```

The function also supports providing a [`Date`][date-object] object.

```javascript
var num = dayOfQuarter( new Date() );
// returns <number>
```

</section>

<!-- /.usage -->

<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var quarterOfYear = require( '@stdlib/time/quarter-of-year' );
var dayOfQuarter = require( '@stdlib/time/day-of-quarter' );

var months;
var day;
var yr;
var q;
var v;
var i;

months = [
    'January',
    'February',
    'March',
    'April',
    'May',
    'June',
    'July',
    'August',
    'September',
    'October',
    'November',
    'December'
];

yr = 2016;
day = 9;

for ( i = 0; i < months.length; i++ ) {
    q = quarterOfYear( months[ i ] );
    v = dayOfQuarter( months[ i ], day, yr );
    console.log( 'In the year %d, %s %d is day number %d of Q%d.', yr, months[ i ], day, v, q );
}
```

</section>

<!-- /.examples -->

* * *

<section class="cli">

## CLI

<section class="usage">

### Usage

```text
Usage: day-of-quarter [options] [<month> <day> <year>]

Options:

  -h,    --help                Print this message.
  -V,    --version             Print the package version.
```

</section>

<!-- /.usage -->

<section class="examples">

### Examples

```bash
$ day-of-quarter
<number>
```

For a specific date,

```bash
$ day-of-quarter 12 31 2016
92
```

</section>

<!-- /.examples -->

</section>

<!-- /.cli -->

<section class="links">

[date-object]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date

</section>

<!-- /.links -->