BusinessDaysCalculator

This is a library for calculating the number of business days between two dates, considering the number of holidays in the range.

You can use it as a Node.js module or in browser.

Instalation

If you use NPM, then you can install it with npm install business-days-calculator. Otherwise, you can download the latest release and use it in your browser or in other Javascript-based projects.

Usage

Node.js

var calculator = require("business-days-calculator");
var calendar = require("holidays-calendar-brazil");
calculator.SetCalendar(calendar);

var today = new Date();
console.log('Today '+ (calculator.IsBusinessDay(today) ? 'is' : 'isn\'t') +' a business day');
console.log('Today '+ (calculator.IsHoliday(today) ? 'is' : 'isn\'t') +' a holiday');
console.log('The Carnival next year is due to '+ (calculator.NextHoliday(new Date("1 January "+today.getFullYear()))));

Browser

<script src="../node_modules/holidays-calendar/dist/HolidaysCalendar.js"></script>
<script src="../node_modules/holidays-calendar-brazil/src/HolidaysCalendar-brazil.js" charset="utf-8"></script>
<script src="../dist/BusinessDaysCalculator.js"></script>
<script>
var today = new Date();
console.log('Today '+ (BusinessDaysCalculator.IsBusinessDay(today) ? 'is' : 'isn\'t') +' a business day');
console.log('Today '+ (BusinessDaysCalculator.IsHoliday(today) ? 'is' : 'isn\'t') +' a holiday');
console.log('The Carnival next year is due to '+ (BusinessDaysCalculator.NextHoliday(new Date("1 January "+today.getFullYear()))));
</script>

API Reference

ContinuousDaysBetween(date1, date2)

Counts the number of continuous/consecutive days between date1 and date2

date1: date, required. Starting date.

date2: date, required. Ending date.

return: integer. Number of continous days between dates.

Example

var calculator = require('business-days-calculator');
 
var data = calculator.ContinuousDaysBetween(new Date("1 January 2020"), new Date("31 January 2020"));
\\data equals to 30

HolidaysBetween(date1, date2)

Counts the number of holidays between date1 and date2

date1: date, required. Starting date.

date2: date, required. Ending date.

return: integer. Number of holidays according to the calendar in use.

Example

var calendar = require('holidays-calendar-brazil');
var calculator = require('business-days-calculator');
calculator.SetCalendar(calendar);
 
var data = calculator.HolidaysBetween(new Date("1 January 2020"), new Date("31 December 2020"));
\\data equals to 12

IsBusinessDay(date)

Verifies if date doesn't correspond to a Sunday or Saturday, neither is a holiday.

date: date, required. Date reference.

return: Boolean. Whether date is a business day or not.

Example

var calendar = require('holidays-calendar-brazil');
var calculator = require('business-days-calculator');
calculator.SetCalendar(calendar);
 
var data = calculator.IsBusinessDay(new Date("1 January 2020"));
\\data equals to false

IsHoliday(date)

Verifies if date happens to be a holiday.

date: date, required. Date reference.

return: Boolean. Whether date is a holiday or not.

Example

var calendar = require('holidays-calendar-brazil');
var calculator = require('business-days-calculator');
calculator.SetCalendar(calendar);
 
var data = calculator.IsHoliday(new Date("1 January 2020"));
\\data equals to true

Locale()

Verifies which locale/calendar the library is set to use.

return: String. Locale identificator.

Example

var calendar = require('holidays-calendar-brazil');
var calculator = require('business-days-calculator');
calculator.SetCalendar(calendar);
 
var data = calculator.Locale();
\\data equals to 'brazil'

NextHoliday(date)

Retrieves the next holiday after date.

date: date, required. Date reference (date won't be considered as a candidate).

return: Mixed. date if there's a holiday in the calendar anywhere after date; false, otherwise.

Example

var calendar = require('holidays-calendar-brazil');
var calculator = require('business-days-calculator');
calculator.SetCalendar(calendar);
 
var data = calculator.NextHoliday(new Date("1 January 2020"));
\\data equals to 'Mon Feb 24 2020' (which is Carnival)

NextWorkingDay(date, considerHolidays)

Retrieves the next business/working day after date.

date: date, required. Date reference (date won't be considered as a candidate).

considerHolidays: boolean, optional (default: true). Whether the holiday calendar should be used in the filter. If negative, this method will output the first week day after date;

return: date. Next business/working day.

Example

var calendar = require('holidays-calendar-brazil');
var calculator = require('business-days-calculator');
calculator.SetCalendar(calendar);
 
var data = calculator.NextHoliday(new Date("1 January 2020"));
\\data equals to 'Mon Feb 24 2020' (which is Carnival)

SetCalendar(calendar)

Configures the library to use calendar as a reference for holidays.

calendar: Mixed, required. object, as an extension of 'holidays-calendar' library (useful in Node.js environment only); String representing the locale to be used.

Example

var brazilianCalendar = require('holidays-calendar-brazil');
var calendar = require('holidays-calendar');
var calculator = require('business-days-calculator');

calculator.SetCalendar(brazilianCalendar);

var data = calculator.Locale();
\\data equals to 'brazil'

calendar.AddCalendar('generic',{}); // adds a new calendar, although empty

calculator.SetCalendar(calendar);
data = calculator.Locale();
\\data equals to 'generic'

calendar.AddCalendar('generic2',{}); // adds a new calendar, although empty
calculator.SetCalendar('generic2');
data = calculator.Locale();
\\data equals to 'generic2'

WorkingDaysBetween(date1, date2, discountHolidays)

Counts the number of business days between date1 and date2

date1: date, required. Starting date.

date2: date, required. Ending date.

discountHolidays: boolean, optional (default: true). Whether the library should consider holidays in the counting.

return: integer. Number of business days according to the calendar in use.

Example

var calendar = require('holidays-calendar-brazil');
var calculator = require('business-days-calculator');
calculator.SetCalendar(calendar);
 
var data = calculator.WorkingDaysBetween(new Date("1 January 2020"), new Date("31 December 2020"));
\\data equals to 250
data = calculator.WorkingDaysBetween(new Date("1 January 2020"), new Date("31 December 2020"), false);
\\data equals to 262