🇩🇰 danish-holidays

Get official Danish public holidays by year, and check if a specific date is a holiday in Denmark.

Lightweight, dependency-free, and perfect for calendar logic, booking systems, HR tools, or frontend apps where accurate public holiday detection in Denmark is needed.

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✨ Features

• Get all official Danish holidays for any year (getHolidaysInDenmark)
• Check if a specific date is a holiday (isHolidayInDenmark)
• Fully offline – no external APIs
• Correct calculation of Easter-based holidays using Gauss's algorithm
• Returns ISO-formatted date strings (yyyy-mm-dd)

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🚀 Installation

npm install danish-holidays

Get all official danish holidays for a given year

import { getHolidaysInDenmark } from 'danish-holidays';

const holidays = getHolidaysInDenmark(2026);

console.log(holidays);

Output

[
  { date: '2026-01-01', name: 'Nytårsdag' },
  { date: '2026-04-02', name: 'Skærtorsdag' },
  { date: '2026-04-03', name: 'Langfredag' },
  { date: '2026-04-05', name: 'Påskedag' },
  { date: '2026-04-06', name: '2. påskedag' },
  { date: '2026-05-14', name: 'Kristi himmelfartsdag' },
  { date: '2026-05-24', name: 'Pinsedag' },
  { date: '2026-05-25', name: '2. pinsedag' },
  { date: '2026-12-25', name: '1. juledag' },
  { date: '2026-12-26', name: '2. juledag' }
]

Get holidays in english

import { getHolidaysInDenmark } from 'danish-holidays';

const holidayEN = getHolidaysInDenmark(2026, { locale: 'en' });

console.log(holidayEN);

Output

[
  { date: '2026-01-01', name: "New Year's Day" },
  { date: '2026-04-02', name: 'Maundy Thursday' },
  { date: '2026-04-03', name: 'Good Friday' },
  { date: '2026-04-05', name: 'Easter Sunday' },
  { date: '2026-04-06', name: 'Easter Monday' },
  { date: '2026-05-14', name: 'Ascension Day' },
  { date: '2026-05-24', name: 'Pentecost' },
  { date: '2026-05-25', name: 'Whit Monday' },
  { date: '2026-12-25', name: 'Christmas Day' },
  { date: '2026-12-26', name: 'Boxing Day' }
]

Check if a date is a holiday

import { isHolidayInDenmark } from 'danish-holidays';

const today = new Date();
console.log(isHolidayInDenmark(today)); // false (unless today is a holiday)

const isHoliday = isHolidayInDenmark('2026-12-25');
console.log(isHoliday); // true christmas day 

🛠 Licence

MIT

✨ Created by Chrilleweb

If you like this package, feel free to ⭐️ star it on GitHub or contribute!