@stdlib/time-day-of-quarter

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dayOfQuarter

Determine the day of the quarter.

Installation

npm install @stdlib/time-day-of-quarter

Usage

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

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

Returns the day of the quarter.

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.

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).

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 object.

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

Examples

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 );
}

See Also

• @stdlib/time-day-of-quarter-cli: CLI package for use as a command-line utility.
• @stdlib/time-day-of-year: determine the day of the year.

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Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.

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License

See LICENSE.

Copyright

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