Carbon mixin to handle business days

1.6.0 2019-04-08 20:50 UTC


Carbon mixin to handle business days

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composer require cmixin/business-day


First load the mixin in some global bootstrap place of your app:


use Cmixin\BusinessDay;

// You can select one of our official list
$baseList = 'us-national'; // or region such as 'us-il'

// You can add/remove days (optional):
$additionalHolidays = array(
    'independence-day' => null, // Even if it's holiday, you can force it to null to make your business open
    'boss-birthday'    => '09-26', // Close the office on September 26th
    // you can also use slash if you prefer day first '26/09' (September 26th too)
    'julian-christmas' => '= julian 12-25', // We support many calendars such as the Julian calendar
    // We support expressions
    'special-easter'   => '= Tuesday before easter',
    'last-monday'      => '= last Monday of October',
    'conditional'      => '= 02-25 if Tuesday then next Friday', // We support conditions
    // And we support closures:
    'very-special'     => function ($year) {
        if ($year === 2020) {
            return '01-15';

        return '02-15';

BusinessDay::enable('Carbon\Carbon', $baseList, $additionalHolidays);
// Or if you use Laravel:
// BusinessDay::enable('Illuminate\Support\Carbon', $baseList, $additionalHolidays);

// And you can even enable multiple classes at once:
), $baseList, $additionalHolidays);

Try in the live editor

Business days methods are now available on any Carbon instance used anywhere later.

You can also just enable methods on Carbon then set region/holidays later:


use Cmixin\BusinessDay;

// Or if you use Laravel:
// BusinessDay::enable('Illuminate\Support\Carbon');

Configure holidays

You can set different holidays lists for different regions (to handle different countries, enterprises, etc.)

We provide 356 regional holidays lists of 143 countries that work out of the box in src/Cmixin/Holidays.

And you can easily customize them and add your own lists.

A holidays list file is a PHP file that return an array, each item of the array represent a holiday of the year.

It can be a fixed date such as '12-25' for Christmas, a expression starting with = like 'third Monday of January' or a closure that will calculate the date for the given year.

Expressions support any format the PHP DateTime constructor supports such as:

  • second Wednesday of July
  • 03-01 - 3 days

And we add a lot of syntaxical sugar:

  • = easter 3 (Easter + 3 days)
  • = Friday before 01-01 (before/after)
  • = 01-01 if Saturday then next Monday and if Sunday,Monday then next Tuesday (multiple conditions)
  • = 01-01 if weekend then next Monday (weekend = Saturday or Sunday)
  • = 01-01 substitute (substitute = shift the day to the next day that is not Saturday, Sunday or an other holiday, it means if you have both 01-01 substitute and 01-02 substitute, you're sure to get the 2 holidays not during the weekend in the right order no matter the days it falls)
  • = orthodox -2 (2 days before Orthodox Easter)
  • = julian 12-25 (Julian calendar)
  • = 02-05 on Monday holiday only if this is a Monday.
  • = 02-05 not on Monday not an holiday if this is a Monday.
  • = 02-05 on even years even years only.
  • = 02-05 on every 5 years since 1999 if year is 1999, 2004, 2009, 2014, etc.

setHolidaysRegion / getHolidaysRegion

To select the set of holidays of a region, use:

Carbon::parse('2000-12-25 00:00:00')->isHoliday(); // false
Carbon::parse('2000-12-25 00:00:00')->isHoliday(); // true
Carbon::getHolidaysRegion(); // 'us-national' (national is the default region of a country code)

This will select our national preset for USA (only holidays common to all states).

Before selecting a region the list of holidays is empty so isHoliday will return false for any date.


Get the holiday dates list for a given year:


foreach (Carbon::getYearHolidays(2020) as $id => $holiday) {
    echo $holiday->getHolidayName().': '.$holiday->format('l, F j, Y')."\n";

// If Carbon::getYearHolidays() is called without argument, current year is used instead.

It will output:

New Year: Wednesday, January 1, 2020
Martin Luther King Jr. Day: Monday, January 20, 2020
Washington’s Birthday: Monday, February 17, 2020
Memorial Day: Monday, May 25, 2020
Independence Day: Monday, July 6, 2020
Labor Day: Monday, September 7, 2020
Columbus Day: Monday, October 12, 2020
Day of the veterans: Wednesday, November 11, 2020
Thanksgiving: Thursday, November 26, 2020
Christmas: Friday, December 25, 2020

Try in the live editor


This method allow you to get the holiday list for a given region passed in argument, if no argument given the list for the current selected region is returned.

Carbon::getHolidays('us'); // raw us-national holidays list
Carbon::getHolidays(); // raw fr-national holidays list


It's how you can set your own holidays lists:

Carbon::setHolidays('us-il', array_merge(
        // Presidents' Day
        'presidents-day' => '= third monday of february', // can be a datetime expression
        // Columbus Day
        'columbus-day' => function ($year) { // can be a closure
            $date = new DateTime("second monday of october $year");
            return $date->format('d/m');
        // Day after Thanksgiving
        'thanksgiving-next-day' => '= fourth thursday of november $year +1 day', // '$year' will be replaced by current year
Carbon::setHolidays('my-enterprise', array_merge(
        // Lincoln's Birthday
        'lincolns-birthday' => '= 02-12 substitute', // substitute will shift the holiday until it does not fall on Saturday, Sunday or an other holiday
        'company-closed-day' => '= 04-05 if friday then previous wednesday', // custom rules can be applied with if/then (if can be followed by a day name or "weekend")
// Then when you select my-enterprise, all us-national,
// us-il and my-enterprise days are enabled

You can also pass deep array to setHolidays to set in the same call holidays dates and either observed flags, names (in different languages) or both:

Carbon::setHolidays('my-enterprise', array(
    'lincolns-birthday' => array(
        'date'     => '12/02',
        'observed' => true,
        'name'     => array(
            'en' => "Lincoln's Birthday",
            'fr' => 'Anniversaire du Président Lincoln',


While setHolidays replace the whole holidays list for a given region, addHolidays append holidays to the current list.

Carbon::addHolidays('my-list', array(
    'poney'        => '20/01',
    'swimmingpool' => '21/01',
Carbon::addHolidays('my-list', array(
    'boss-birthday'          => '10/02',
    'boss-birthday-next-day' => '11/02',
Carbon::getHolidays('my-list') // contains 20/01, 21/01, 10/02 and 11/02

As for setHolidays, addHolidays handle deep arrays using date, observed and name keys.


Reset all holidays and region previously set.


Returns true if the date (Carbon instance) is a holiday (in the list of the selected region), false else.

Carbon::parse('2018-01-15')->isHoliday() // true for 2018
Carbon::parse('2018-01-21')->isHoliday() // false for 2018
Carbon::parse('2019-01-15')->isHoliday() // false for 2019
Carbon::parse('2019-01-21')->isHoliday() // true for 2019
Carbon::isHoliday() // true if today is a holiday


Same as isHoliday but returns a string id for the given holiday, so you can target specific holidays.

Carbon::parse('2018-12-25')->getHolidayId() // "christmas"
Carbon::parse('2018-01-15')->getHolidayId() // "mlk-day"
// Returns false if the day is not a holiday
Carbon::parse('2018-01-21')->getHolidayId() // false

$nextWeekHoliday = Carbon::today()->addWeek()->getHolidayId();
if ($nextWeekHoliday === 'easter' or $nextWeekHoliday === 'christmas') {
  echo 'Time to get chocolates.';


Returns the name of the holiday in the current locale (or English by default) or false if the day is not a holiday.

Carbon::parse('2018-12-25')->getHolidayName() // "Christmas"
Carbon::parse('2018-12-25')->getHolidayName('fr') // "Noël"

Carbon::parse('2018-01-15')->getHolidayName() // "Eerste Kerstdag"

// If the name is not translated in business-day
Carbon::parse('2018-01-15')->getHolidayName() // "Christmas"

// With Carbon 2, you can use local locale:
Carbon::parse('2018-01-15')->locale('sl')->getHolidayName() // "Božič"

Note: be aware, region has no effect to the holiday language name since some regions have multiple languages. So to get french names of the french holidays, you need both Carbon::setHolidaysRegion('fr-national') and Carbon::setLocale('fr_FR'), the first for the holiday calendar, the second for the language.


Wanna rename a holiday name in a particular language? No problem:

Carbon::parse('2018-12-25')->getHolidayName() // "Christmas"
Carbon::setHolidayName('christmas', 'en', 'Christmas Day');
Carbon::parse('2018-12-25')->getHolidayName() // "Christmas Day"


Returns true if the date (Carbon instance) is nor a week-end day neither a holiday, false else. Week-end days can be configured (see Carbon documentation weekend section).

Carbon::parse('2018-01-15')->isBusinessDay() // false for 2018 (Martin Luther King Jr. Day, sleep)
Carbon::parse('2018-01-21')->isBusinessDay() // false for 2018 (sunday is week-end by default, sleep)
Carbon::parse('2019-01-15')->isBusinessDay() // true for 2019 (tuesday, nothing special, go to work)
Carbon::parse('2019-01-21')->isBusinessDay() // false for 2019 (Martin Luther King Jr. Day, sleep)
Carbon::isBusinessDay() // true if today is a business day


Add days to the date (Carbon instance) to jump to the next business day (skipping holidays and week-ends).

echo Carbon::parse('2018-01-12')->nextBusinessDay()->format('Y-m-d'); // 2018-01-16
echo Carbon::parse('2018-01-13')->nextBusinessDay()->format('Y-m-d'); // 2018-01-16
echo Carbon::parse('2018-01-15')->nextBusinessDay()->format('Y-m-d'); // 2018-01-16
echo Carbon::parse('2018-01-16')->nextBusinessDay()->format('Y-m-d'); // 2018-01-17
echo Carbon::parse('2018-01-12 12:30:00')->nextBusinessDay()->format('Y-m-d H:i'); // 2018-01-16 12:30 (time is kept)
// If you don't want to keep the time, just use ->startOfDay()
echo Carbon::nextBusinessDay()->format('Y-m-d'); // returns the next business day date after today (midnight)


Sub days to the date (Carbon instance) to jump to the previous business day (skipping holidays and week-ends).

echo Carbon::parse('2018-01-12')->previousBusinessDay()->format('Y-m-d'); // 2018-01-11
echo Carbon::parse('2018-01-13')->previousBusinessDay()->format('Y-m-d'); // 2018-01-12
echo Carbon::parse('2018-01-15')->previousBusinessDay()->format('Y-m-d'); // 2018-01-12
echo Carbon::parse('2018-01-16')->previousBusinessDay()->format('Y-m-d'); // 2018-01-12
echo Carbon::parse('2018-01-15 12:30:00')->previousBusinessDay()->format('Y-m-d H:i'); // 2018-01-12 12:30 (time is kept)
// If you don't want to keep the time, just use ->startOfDay()
echo Carbon::previousBusinessDay()->format('Y-m-d'); // returns the previous business day date before today (midnight)


Returns the current date (Carbon instance) if it's a business day, else add days to jump to the next business day (skipping holidays and week-ends).

echo Carbon::parse('2018-01-12')->currentOrNextBusinessDay()->format('Y-m-d'); // 2018-01-12
echo Carbon::parse('2018-01-13')->currentOrNextBusinessDay()->format('Y-m-d'); // 2018-01-16
echo Carbon::parse('2018-01-15')->currentOrNextBusinessDay()->format('Y-m-d'); // 2018-01-16
echo Carbon::parse('2018-01-16')->currentOrNextBusinessDay()->format('Y-m-d'); // 2018-01-16
echo Carbon::parse('2018-01-13 12:30:00')->currentOrNextBusinessDay()->format('Y-m-d H:i'); // 2018-01-16 12:30 (time is kept)
// If you don't want to keep the time, just use ->startOfDay()
echo Carbon::currentOrNextBusinessDay() // equivalent to Carbon::today()->currentOrNextBusinessDay()


Returns the current date (Carbon instance) if it's a business day, else sub days to jump to the previous business day (skipping holidays and week-ends).

echo Carbon::parse('2018-01-12')->currentOrPreviousBusinessDay()->format('Y-m-d'); // 2018-01-12
echo Carbon::parse('2018-01-13')->currentOrPreviousBusinessDay()->format('Y-m-d'); // 2018-01-12
echo Carbon::parse('2018-01-15')->currentOrPreviousBusinessDay()->format('Y-m-d'); // 2018-01-12
echo Carbon::parse('2018-01-16')->currentOrPreviousBusinessDay()->format('Y-m-d'); // 2018-01-16
echo Carbon::parse('2018-01-13 12:30:00')->currentOrPreviousBusinessDay()->format('Y-m-d H:i'); // 2018-01-16 12:30 (time is kept)
// If you don't want to keep the time, just use ->startOfDay()
echo Carbon::currentOrPreviousBusinessDay() // equivalent to Carbon::today()->currentOrPreviousBusinessDay()


Add days to the date (Carbon instance) skipping holidays and week-ends.

echo Carbon::parse('2018-01-10')->addBusinessDays(4)->format('Y-m-d'); // 2018-01-17
echo Carbon::parse('2018-01-13')->addBusinessDays()->format('Y-m-d'); // 2018-01-16 add 1 business day by default
echo Carbon::addBusinessDays(6)->format('Y-m-d'); // returns the date 6 business days after today (midnight)


Alias addBusinessDays.

subBusinessDays or subtractBusinessDays

Sub days to the date (Carbon instance) skipping holidays and week-ends.

echo Carbon::parse('2018-01-17')->subBusinessDays(4)->format('Y-m-d'); // 2018-01-12
echo Carbon::parse('2018-01-15')->subBusinessDays()->format('Y-m-d'); // 2018-01-12 sub 1 business day by default
echo Carbon::subBusinessDays(5)->format('Y-m-d'); // returns the date 5 business days date before today (midnight)

subBusinessDay or subtractBusinessDay

Alias subBusinessDays.


You can define isolated zones that can observe different holidays lists. By default the zone is "default".



Carbon::unobserveHolidays(array('labor-day', 'mlk-day'));

Carbon::parse('2018-01-15')->isObservedHoliday(); // true
Carbon::parse('2018-07-04')->isObservedHoliday(); // false
Carbon::parse('2018-09-03')->isObservedHoliday(); // true

Carbon::parse('2018-01-15')->isObservedHoliday(); // false
Carbon::parse('2018-07-04')->isObservedHoliday(); // true
Carbon::parse('2018-09-03')->isObservedHoliday(); // false


Get the current zone used for observed holidays.

Carbon::getObservedHolidaysZone(); // "Illinois-subsidiary-company"


Return true if the current day is an observed holiday (holiday as per the holidays list in use and if it's observed as per the current zone).

Carbon::parse('2018-01-15')->isHoliday(); // true
// By default no holiday is observed
Carbon::parse('2018-01-15')->isObservedHoliday(); // false
// Then you can observe a list of holidays
Carbon::unobserveHolidays(array('christmas', 'new-year'));
Carbon::parse('2018-01-15')->isObservedHoliday(); // true
// Observed holidays are kept if you change the holidays region:
Carbon::parse('2018-01-15')->isObservedHoliday(); // true
// So you can observe holidays that are not in the current region with no restriction
// You can check observance by ID:
Carbon::isObservedHoliday('christmas'); // false
Carbon::isObservedHoliday('labor-day'); // true
Carbon::isObservedHoliday(); // check if today is an observed holiday


Observe holidays. You can have multiple set of observed days using setObservedHolidaysZone.

Carbon::observeHoliday(array('christmas', 'new-year'));


Alias of observeHoliday.

Carbon::observeHolidays(array('christmas', 'new-year'));


Set holidays as not observed. You can have multiple set of observed days using setObservedHolidaysZone.

Carbon::unobserveHoliday(array('christmas', 'new-year'));


Alias of unobserveHoliday.

Carbon::unobserveHolidays(array('christmas', 'new-year'));


Remove any previous settings for observed days in the current zone, then make every holidays as observed by default.

// Observe every holidays except Easter


Remove any previous settings for observed days in the current zone, then make every holidays as not observed by default.

// Observe only Easter


Get the number of open days between 2 dates.

$openDays = Carbon::diffInBusinessDays('December 25'); // If only one date, [now] is used as the second date

echo "You have to work $openDays days until Christmas.\n";

$days = Carbon::parse('2019-06-10')->diffInBusinessDays(Carbon::parse('2019-06-18')->endOfDay());

echo "If you ask to leave from 2019-06-10 to 2019-06-18, it will cost to you $days days of paid vacation.\n";
// Note the ->endOfDay() to include the last day of the range


Get the number of open days in the current/given month.

echo Carbon::getBusinessDaysInMonth(); // Open days count in the current month
echo Carbon::getBusinessDaysInMonth('2019-06'); // Open days count in June 2019
echo Carbon::parse('2019-06-10')->getBusinessDaysInMonth(); // Can be called from an instance


Get an array of Carbon objects for each open day in the current/given month.

print_r(Carbon::getMonthBusinessDays()); // All open days in the current month
print_r(Carbon::getMonthBusinessDays('2019-06')); // Open days in June 2019
print_r(Carbon::parse('2019-06-10')->getMonthBusinessDays()); // Can be called from an instance


To enable business-day globally in Laravel, set default holidays settings in the config file config/carbon.php (create this file if it does not exist yet):

<?php return [
  'holidays' => [
    'region' => 'us',
    'with' => [
      'boss-birthday' => '09-26',
      'last-monday'   => '= last Monday of October',

Note about timezones

When you set an holidays region, it does not change the timezone, so if January 1st is an holiday, ->isHoliday() returns true from Carbon::parse('2010-01-01 00:00:00.000000) to Carbon::parse('2010-01-01 23:59:59.999999) no matter the timezone you set for those Carbon instance.

If you want to know if it's holiday or business day in somewhere else in the world, you have to convert it:

Carbon::parse('2010-01-01 02:30', 'Europe/Paris')->setTimezone('America/Toronto')->isHoliday() // false
Carbon::parse('2010-01-01 12:30', 'Europe/Paris')->setTimezone('America/Toronto')->isHoliday() // true


The scope of this library is to date business date and time utilities to Carbon, if you think of a feature in this scope, feel free to submit a pull-request.

We will also happily merge any holidays file matching an official country, state or region holidays list.


Based on the work of Christopher "rmblstrp", see Carbon PR #706