@18f/us-federal-holidays
v4.0.0
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All about US federal holidays
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US Federal Holidays
Builds and returns a list of all US federal holidays for a given year, and provides a helper method to determine if a given date is a US federal holiday. Handles shifting holidays to the nearest weekday if the holiday falls on a weekend.
US federal holidays are as defined by OPM.
Installation
npm install @18f/us-federal-holidays
Requires Node.js 12 or higher.
Usage
To get a list of all US federal holidays in a given year, use the allForYear
method. If no year is passed in, uses the current year.
const fedHolidays = require('@18f/us-federal-holidays');
const options = { shiftSaturdayHolidays: true, shiftSundayHolidays: true };
const holidays = fedHolidays.allForYear(2016, options);
// Returns
[ { name: 'New Year\'s Day',
date: 2016-01-01T00:00:00.000Z,
dateString: '2016-1-1' },
{ name: 'Birthday of Martin Luther King, Jr.',
date: 2016-01-18T00:00:00.000Z,
dateString: '2016-1-18' },
{ name: 'Washington\'s Birthday',
alsoObservedAs: 'Presidents\' Day',
date: 2016-02-15T00:00:00.000Z,
dateString: '2016-2-15' },
{ name: 'Memorial Day',
date: 2016-05-30T00:00:00.000Z,
dateString: '2016-5-30' },
{
name: 'Juneteenth National Independence Day',
date: 2016-06-20T00:00:00.000Z,
dateString: '2016-6-20' },
{ name: 'Independence Day',
date: 2016-07-04T00:00:00.000Z,
dateString: '2016-7-4' },
{ name: 'Labor Day',
date: 2016-09-05T00:00:00.000Z,
dateString: '2016-9-5' },
{ name: 'Columbus Day',
alsoObservedAs: 'Indigenous Peoples\' Day',
date: 2016-10-10T00:00:00.000Z,
dateString: '2016-10-10' },
{ name: 'Veterans Day',
date: 2016-11-11T00:00:00.000Z,
dateString: '2016-11-11' },
{ name: 'Thanksgiving Day',
date: 2016-11-24T00:00:00.000Z,
dateString: '2016-11-24' },
{ name: 'Christmas Day',
date: 2016-12-26T00:00:00.000Z,
dateString: '2016-12-26' } ]
To get a list of all US federal holidays within a date range, use the inRange
method. If no start
date is provided in, uses the current date. If the end
date is omitted, one year from the current date is used.
const fedHolidays = require('@18f/us-federal-holidays');
const start = new Date('2016-02-13');
const end = new Date('2017-07-23');
const options = { shiftSaturdayHolidays: true, shiftSundayHolidays: true };
const holidays = fedHolidays.federalHolidaysInRange(start, end, options);
// Returns
[ { name: 'Washington\'s Birthday',
date: 2016-02-15T00:00:00.000Z,
dateString: '2016-2-15' },
{ name: 'Memorial Day',
date: 2016-05-30T00:00:00.000Z,
dateString: '2016-5-30' },
{
name: 'Juneteenth National Independence Day'
date: 2016-06-20T00:00:00.000Z,
dateString: '2016-6-20' },
{ name: 'Independence Day',
date: 2016-07-04T00:00:00.000Z,
dateString: '2016-7-4' },
{ name: 'Labor Day',
date: 2016-09-05T00:00:00.000Z,
dateString: '2016-9-5' },
{ name: 'Columbus Day',
alsoObservedAs: 'Indigenous Peoples\' Day',
date: 2016-10-10T00:00:00.000Z,
dateString: '2016-10-10' },
{ name: 'Veterans Day',
date: 2016-11-11T00:00:00.000Z,
dateString: '2016-11-11' },
{ name: 'Thanksgiving Day',
date: 2016-11-24T00:00:00.000Z,
dateString: '2016-11-24' },
{ name: 'Christmas Day',
date: 2016-12-26T00:00:00.000Z,
dateString: '2016-12-26' },
{ name: 'New Year\'s Day',
date: 2017-01-02T00:00:00.000Z,
dateString: '2017-1-2' },
{ name: 'Birthday of Martin Luther King, Jr.',
date: 2017-01-16T00:00:00.000Z,
dateString: '2017-1-16' },
{ name: 'Washington\'s Birthday',
alsoObservedAs: 'Presidents\' Day',
date: 2017-02-20T00:00:00.000Z,
dateString: '2017-2-20' },
{ name: 'Memorial Day',
date: 2017-05-29T00:00:00.000Z,
dateString: '2017-5-29' },
{
name: 'Juneteenth National Independence Day'
date: 2017-06-19T00:00:00.000Z,
dateString: '2017-6-19' },
{ name: 'Independence Day',
date: 2017-07-04T00:00:00.000Z,
dateString: '2017-7-4' } ]
To determine if a date is a federal holiday, use the isAHoliday
method. If no
argument is provided, defaults to the current date:
const fedHolidays = require("@18f/us-federal-holidays");
const options = {
shiftSaturdayHolidays: true,
shiftSundayHolidays: true,
utc: false
};
const isAHoliday = fedHolidays.isAHoliday(myDate, options);
// Returns true or false
All three methods take options
as a second argument. This argument is a plain
object which accepts the following properties:
{
// Whether or not holidays that fall on Saturdays should be
// shifted to Friday observance. If you don't follow the
// US federal standard for observing holidays on weekends,
// you can adjust by setting this value to false.
// Default value is true.
shiftSaturdayHolidays: boolean,
// Whether or not holidays that fall on Sundays should be
// shifted to Monday observance. If you don't follow the
// US federal standard for observing holidays on weekends,
// you can adjust by setting this value to false.
// Default value is true.
shiftSundayHolidays: boolean
}
Additionally, isAHoliday
takes an options.utc
parameter:
{
// Whether to treat the first argument as a UTC date instead
// of the local time. Defaults to false. This is useful if
// you're generating dates from UTC timestamps or otherwise
// creating objects from UTC-based dates.
// Default value is false.
// This option only applies to the isAHoliday method.
utc: boolean;
}
Public domain
This project is in the worldwide public domain. As stated in CONTRIBUTING:
This project is in the public domain within the United States, and copyright and related rights in the work worldwide are waived through the CC0 1.0 Universal public domain dedication.
All contributions to this project will be released under the CC0 dedication. By submitting a pull request, you are agreeing to comply with this waiver of copyright interest.