Indonesia Long Weekends 2027 and Counting Working Days in Code

Indonesia has six long weekends in 2027 that need no extra leave, and the longest runs 10 days in a row from 6 to 15 March 2027 (Nyepi, Eid al-Fitr and collective leave). On a Monday to Friday week, 2027 has 261 weekdays, which drops to 250 working days after public holidays, or 242 if the collective leave days (cuti bersama) are also taken off. All figures are computed from the 26 rows of the official 2027 joint ministerial decree (SKB 3 Menteri) served by API Indonesia.

Source: joint decree of the Minister of Religious Affairs, Minister of Manpower and Minister of State Apparatus No. 1205/2026, No. 3/2026, No. 2/2026, signed 15 September 2026 (KemenPANRB press release): 18 public holidays and 8 collective leave days. Computed 29 October 2026.

Long weekends in 2027 (no leave needed)

Dates	Length	Why
Fri 1 to Sun 3 January	3 days	New Year 2027
Fri 5 to Sun 7 February	3 days	Collective leave (5 Feb) + Chinese New Year (Sat 6 Feb)
Sat 6 to Mon 15 March	10 days	Nyepi (8), collective leave (9), Eid al-Fitr (10-11), collective leave (12 and 15)
Thu 25 to Sun 28 March	4 days	Collective leave (25), Good Friday (26), Easter (28)
Sat 15 to Thu 20 May	6 days	Eid al-Adha (17), collective leave for Eid al-Adha (18) and Vesak (19), Vesak (20)
Fri 24 to Sun 26 December	3 days	Collective leave (24), Christmas (25), Isra Mi'raj 1449 AH (26)

Bridge days: take one day off

Day off	Resulting break	Total
Mon 4 January	1 to 5 January (Isra Mi'raj on Tue 5 Jan)	5 days
Fri 7 May	6 to 9 May (Ascension Day Thu 6 May)	4 days
Fri 21 May	15 to 23 May	9 days
Mon 31 May	29 May to 1 June (Pancasila Day on Tue)	4 days
Mon 16 August	14 to 17 August (Independence Day on Tue)	4 days

Seven 2027 public holidays fall on a weekend: Chinese New Year (6 Feb), Easter (28 Mar), Labour Day (1 May), Islamic New Year (6 Jun), the Prophet's Birthday (15 Aug), Christmas (25 Dec) and Isra Mi'raj 1449 AH (26 Dec).

Working days per month in 2027 (Monday to Friday)

Month	Weekdays	Public holidays on weekdays	Collective leave	Working days (leave days worked)	Working days (leave days off)
January	21	2	0	19	19
February	20	0	1	20	19
March	23	4	4	19	15
April	22	0	0	22	22
May	21	3	2	18	16
June	22	1	0	21	21
July	22	0	0	22	22
August	22	1	0	21	21
September	22	0	0	22	22
October	21	0	0	21	21
November	22	0	0	22	22
December	23	0	1	23	22
Total	261	11	8	250	242

For private employers, collective leave follows company policy and is usually deducted from annual leave, which is why both columns are shown.

Counting working days in code

Fetch the year's holidays once, keep them in a Set, then count Monday to Friday dates that are not in it.

curl "https://use.apiindonesia.id/api/v1/libur?tahun=2027" \
  -H "x-api-key: YOUR_API_KEY"

async function holidaySet(year, { collectiveLeaveOff = true } = {}) {
  const r = await fetch(`https://use.apiindonesia.id/api/v1/libur?tahun=${year}`, {
    headers: { 'x-api-key': process.env.API_INDONESIA_KEY },
  });
  const { data } = await r.json();
  return new Set(
    data.filter((h) => collectiveLeaveOff || !h.is_joint_leave).map((h) => h.date)
  );
}

function workingDays(from, to, holidays) {
  let n = 0;
  for (let d = new Date(from + 'T00:00:00Z'); d <= new Date(to + 'T00:00:00Z'); d.setUTCDate(d.getUTCDate() + 1)) {
    const dow = d.getUTCDay();
    if (dow !== 0 && dow !== 6 && !holidays.has(d.toISOString().slice(0, 10))) n++;
  }
  return n;
}

const holidays = await holidaySet(2027);
console.log(workingDays('2027-03-01', '2027-03-31', holidays)); // 15

The same function covers delivery SLAs ("3 working days"), invoice due dates and prorated salaries. For payroll, pair it with the minimum wage (UMP) API.

Tips:

• Call once per year and cache. A year of holidays is only 26 rows.
• Keep collective leave separate. Use is_joint_leave or type: "cuti_bersama" so each company's policy can be configured.
• Iterate dates in UTC so results don't shift with the server's timezone.

The response fields are in Indonesian (date, name, type, is_joint_leave, source). More on the endpoint in Indonesia public holidays API for HR and payroll.

FAQ

How many working days are there in Indonesia in 2027? 250 on a Monday to Friday week after the 11 public holidays that fall on weekdays. If the 8 collective leave days are also off, 242.

When is the longest long weekend in 2027? 6 to 15 March 2027, 10 consecutive days, because Nyepi, Eid al-Fitr 1448 AH and collective leave fall together.

Can the Eid dates change? Yes. The decree says Islamic holiday dates follow the Ministry of Religious Affairs' isbat decision. If they change, the API data is updated and the counts follow.

What about a Monday to Saturday week? Change the check to exclude only Sundays (dow !== 0). The holiday data stays the same.

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