Newly Potted Mandrakes

    TypeScript icon, indicating that this package has built-in type declarations

    3.4.1 • Public • Published


    parser for world-wide holidays

    NPM version Build Status

    This module provides a parser for date-holidays which does calculation of holidays dates for various countries, states and regions by type while considering the applicable timezone.

    The features are:

    • calculation of public, bank and observance holidays for different countries, state, region, following ISO 3166-2
    • consideration of timezones for holiday checks
    • consideration of start and end time dependent on timezone
    • substitute days
    • multi-language support for all holiday names
    • setting of custom holidays
    • uses own grammar for calculation of days
    • support for islamic calendar from 1970 to 2080 (*islamic dates might not be correct as they are subject to the sighting of the moon)
    • support for hebrew calendar from 1970 to 2100
    • support for chinese calendar

    Happy holidays!

    Table of Contents


    const data = require('date-holidays/data/holidays.json')
    const Holidays = require('date-holidays-parser')
    const hd = new Holidays(data)
    // get supported countries
    { AD: 'Andorra',
      US: 'United States' }
    // get supported states e.g. for US
    { al: 'Alabama',
      wy: 'Wyoming' }
    // get supported regions e.g. for US, Lousiana
    hd.getRegions('US', 'la')
    { no: 'New Orleans' }
    // initialize holidays for US, Lousiana, New Orleans
    hd.init('US', 'la', 'no')
    // or using a new instance
    hd = new Holidays('US', 'la', 'no')
    // get all holidays for the year 2016
    [ { date: '2016-01-01 00:00:00',
        start: Fri Jan 01 2016 00:00:00 GMT-0600 (CST),
        end: Sat Jan 02 2016 00:00:00 GMT-0600 (CST),
        name: 'New Year\'s Day',
        type: 'public' },
      { date: '2016-11-24 00:00:00',
        start: Thu Nov 24 2016 00:00:00 GMT-0600 (CST),
        end: Fri Nov 25 2016 00:00:00 GMT-0600 (CST),
        name: 'Thanksgiving Day',
        type: 'public' },
      { date: '2016-12-26 00:00:00',
        start: Mon Dec 26 2016 00:00:00 GMT-0600 (CST),
        end: Tue Dec 27 2016 00:00:00 GMT-0600 (CST),
        substitute: true,
        name: 'Christmas Day (substitute day)',
        type: 'public' } ]
    // check if date is a holiday while respecting timezones
    hd.isHoliday(new Date('2016-02-09 00:00:00 GMT+0000'))
    //> false
    hd.isHoliday(new Date('2016-02-09 10:00:00 GMT-0600'))
    { date: '2016-02-09 00:00:00',
      start: Tue Feb 09 2016 00:00:00 GMT-0600 (CST),
      end: Wed Feb 10 2016 00:00:00 GMT-0600 (CST),
      name: 'Mardi Gras',
      type: 'public' }

    Holiday object

    getHolidays() as well as a matching isHoliday() call return either a list or a single holiday object which consists of:

    • {String} date - ISO Date String of (start)-date in local format
    • {Date} start - start date of holiday
    • {Date} end - end date of holiday
    • {String} name - name of holiday using language (if available)
    • {String} type - type of holiday public|bank|school|optional|observance
    • {Boolean} substitute - (optional) if true holiday substitutes another holiday`
    • {String} note - (optional) note`


    The date String represents the start date of the holiday in ISO format without timezone. This string it intended for information only.

    start and end are the start/end date of the holiday within the selected timezone of the country, state, region.


    The name names the holiday in the local language of the selected country, state, region. The applied language(s) can be requested using getLanguages().

    The language can be changed using the setLanguages() method. In case that not translation is available a fall-back to the next given language will be made. E.g. local language is "fr", setLanguages('nl') was called. For all holidays where no dutch translation is available the French version will be used instead.

    All holiday names should support an English translation.

    Types of holidays

    Currently the following type with their meaning are supported

    type meaning
    public public holiday
    bank bank holiday, banks and offices are closed
    school school holiday, schools are closed
    optional majority of people take a day off
    observance optional festivity, no paid day off

    Additionally a note field is sometimes available for further clarification.


    See Holidays API for further information.


    This project also runs in all modern browsers. See ./examples/browser

    Browser Version Notes
    Chrome >=45
    Firefox >=45
    Safari >=10
    Edge >=13
    IE >=10 needs polyfill core-js/es6

    Please do not forget to set the correct charset!

      <!-- set page-wide -->
      <meta charset="UTF-8">
      <!-- or per script -->
      <script src="your-bundle.js" charset="UTF-8"></script>

    Testing was done with zuul. For local browser tests run npm run zuul -- --local 3000 and open http://localhost:3000/__zuul.

    requires manual install of

    npm i zuul@3 browserify@10


    All data for the holidays of the different countries is contained in ./data/holidays.json. For changing holiday data edit the appropriate country in ./data/countries. Any details on structure and available grammar for holiday attribution is described in holidays.yaml specification.

    Contribution and License Agreement

    If you contribute code to this project, you are implicitly allowing your code to be distributed under the ISC license. You are also implicitly verifying that all code is your original work or correctly attributed with the source of its origin and license.


    Copyright (c) 2015-present commenthol (ISC License)

    See LICENSE for more information.



    npm i date-holidays-parser

    DownloadsWeekly Downloads






    Unpacked Size

    233 kB

    Total Files


    Last publish


    • commenthol