Public Holidays 2027: Official Dates for 35 Countries (.ics)
On this page
The 2027 plan is due in December, the team sits in four countries, and the shared calendar still has 2026’s holidays. Copying dates from a listicle is how teams end up with a “holiday” that the government moved, or miss the Friday off when a holiday falls on Saturday.
This page lists 2027’s public holidays for 35 countries from each government’s own list (or, where 2027 is not published yet, its law), read between 2 and 13 November 2026, with the days that move off a weekend and the ones that are simply lost. Every country has a calendar file to import.
Short answer: in 2027 Christmas and Boxing Day fall on a weekend, so most countries move them to Monday 27 and Tuesday 28 December (UK, Australia, New Zealand) or Friday 24 December (US federal), and the US also takes Friday 31 December for New Year’s Day 2028. Germany moves nothing and has only 5 weekdays off nationwide. Easter Sunday is 28 March, so Good Friday is 26 March and Easter Monday 29 March.
2027 at a glance
| Holidays on a weekend in 2027 | What happens | |
|---|---|---|
| United States | Juneteenth (Sat), Independence Day (Sun), Christmas (Sat), New Year 2028 (Sat) | Moved: Saturday to Friday, Sunday to Monday |
| United Kingdom | Christmas (Sat), Boxing Day (Sun), 2 January in Scotland (Sat) | Substitute days on Monday and Tuesday |
| Canada (federal) | Christmas (Sat), Boxing Day (Sun) | A work day just before or after |
| Australia | Anzac Day (Sun), Christmas (Sat), Boxing Day (Sun) | Additional days, by state |
| Ireland | Christmas (Sat), St Stephen’s Day (Sun) | No automatic day off |
| New Zealand | 2 January, Waitangi Day, ANZAC Day, Christmas, Boxing Day | Moved to Monday (or Tuesday) |
| Singapore | Chinese New Year (Sat and Sun), Labour Day (Sat), Christmas (Sat) | Only the Sunday moves, to Monday 8 February |
| Germany | Labour Day (Sat), German Unity Day (Sun), Christmas (Sat), St Stephen’s Day (Sun) | Nothing moves |
Every calendar on this page, with the weekdays it takes off in 2027 and the working days left for a working week. Each name opens the country’s own page: every date, the weekend rule, working days by month and a calendar file.
| Country | Weekdays off | Holidays on a weekend | Working days |
|---|---|---|---|
| Argentina | 12 | 4 | 249 |
| Australia: New South Wales | 9 | 5 | 252 |
| Austria | 9 | 4 | 252 |
| Belgium | 10 | 3 | 251 |
| Brazil (federal) | 7 | 3 | 254 |
| Canada (federal) | 10 | 2 | 251 |
| China | 18 | 11 | 248 |
| Czech Republic | 9 | 4 | 252 |
| Denmark | 6 | 4 | 255 |
| Finland | 6 | 7 | 255 |
| France | 7 | 5 | 254 |
| Germany (nationwide) | 5 | 4 | 256 |
| India (central government, Delhi) | 11 | 5 | 250 |
| Indonesia | 11 | 7 | 250 |
| Ireland | 8 | 2 | 253 |
| Israel | 5 | 4 | 255 |
| Italy | 7 | 5 | 254 |
| Japan | 16 | 1 | 245 |
| Kenya | 8 | 5 | 253 |
| Mexico (federal) | 5 | 2 | 256 |
| Netherlands | 5 | 4 | 256 |
| New Zealand | 11 | 5 | 250 |
| Norway | 6 | 5 | 255 |
| Philippines | 12 | 6 | 249 |
| Poland | 8 | 6 | 253 |
| Portugal | 8 | 5 | 253 |
| Singapore | 8 | 4 | 253 |
| South Africa | 10 | 4 | 251 |
| South Korea | 15 | 9 | 246 |
| Spain (national) | 7 | 3 | 254 |
| Sweden | 5 | 8 | 256 |
| Thailand (bank holidays) | 18 | 5 | 243 |
| Turkey | 11 | 3 | 250 |
| UK: England and Wales | 8 | 0 | 253 |
| UK: Northern Ireland | 10 | 0 | 251 |
| UK: Scotland | 9 | 0 | 252 |
| United States (federal) | 12 | 0 | 249 |
United States
| Date | Holiday | Weekday off? |
|---|---|---|
| 2027-01-01 (Fri 1 Jan) | New Year's Day | Yes |
| 2027-01-18 (Mon 18 Jan) | Birthday of Martin Luther King, Jr. | Yes |
| 2027-02-15 (Mon 15 Feb) | Washington's Birthday | Yes |
| 2027-05-31 (Mon 31 May) | Memorial Day | Yes |
| 2027-06-18 (Fri 18 Jun) | Juneteenth National Independence Day (observed) (Falls on Saturday 19 June) | Yes |
| 2027-07-05 (Mon 5 Jul) | Independence Day (observed) (Falls on Sunday 4 July) | Yes |
| 2027-09-06 (Mon 6 Sept) | Labor Day | Yes |
| 2027-10-11 (Mon 11 Oct) | Columbus Day | Yes |
| 2027-11-11 (Thu 11 Nov) | Veterans Day | Yes |
| 2027-11-25 (Thu 25 Nov) | Thanksgiving Day | Yes |
| 2027-12-24 (Fri 24 Dec) | Christmas Day (observed) (Falls on Saturday 25 December) | Yes |
| 2027-12-31 (Fri 31 Dec) | New Year's Day 2028 (observed) (Falls on Saturday 1 January 2028) | Yes |
Source: US Office of Personnel Management. Calendar file: United States, Federal holidays 2027 (.ics).
These are federal holidays, which federal employees get by law and most private employers follow. OPM’s rule for weekends is in its table notes: for a Saturday holiday “the preceding Friday will be treated as a holiday”, for a Sunday one “the following Monday”. The .ics file is the same one we published with Jira holidays: US federal 2027 (.ics).
United Kingdom
GOV.UK keeps a separate list for each nation.
England and Wales
| Date | Holiday | Weekday off? |
|---|---|---|
| 2027-01-01 (Fri 1 Jan) | New Year's Day | Yes |
| 2027-03-26 (Fri 26 Mar) | Good Friday | Yes |
| 2027-03-29 (Mon 29 Mar) | Easter Monday | Yes |
| 2027-05-03 (Mon 3 May) | Early May bank holiday | Yes |
| 2027-05-31 (Mon 31 May) | Spring bank holiday | Yes |
| 2027-08-30 (Mon 30 Aug) | Summer bank holiday | Yes |
| 2027-12-27 (Mon 27 Dec) | Christmas Day (substitute day) | Yes |
| 2027-12-28 (Tue 28 Dec) | Boxing Day (substitute day) | Yes |
Source: GOV.UK. Calendar file: United Kingdom, Bank holidays, England and Wales 2027 (.ics).
Scotland
| Date | Holiday | Weekday off? |
|---|---|---|
| 2027-01-01 (Fri 1 Jan) | New Year's Day | Yes |
| 2027-01-04 (Mon 4 Jan) | 2nd January (substitute day) | Yes |
| 2027-03-26 (Fri 26 Mar) | Good Friday | Yes |
| 2027-05-03 (Mon 3 May) | Early May bank holiday | Yes |
| 2027-05-31 (Mon 31 May) | Spring bank holiday | Yes |
| 2027-08-02 (Mon 2 Aug) | Summer bank holiday | Yes |
| 2027-11-30 (Tue 30 Nov) | St Andrew's Day | Yes |
| 2027-12-27 (Mon 27 Dec) | Christmas Day (substitute day) | Yes |
| 2027-12-28 (Tue 28 Dec) | Boxing Day (substitute day) | Yes |
Source: GOV.UK. Calendar file: United Kingdom, Bank holidays, Scotland 2027 (.ics).
Northern Ireland
| Date | Holiday | Weekday off? |
|---|---|---|
| 2027-01-01 (Fri 1 Jan) | New Year's Day | Yes |
| 2027-03-17 (Wed 17 Mar) | St Patrick's Day | Yes |
| 2027-03-26 (Fri 26 Mar) | Good Friday | Yes |
| 2027-03-29 (Mon 29 Mar) | Easter Monday | Yes |
| 2027-05-03 (Mon 3 May) | Early May bank holiday | Yes |
| 2027-05-31 (Mon 31 May) | Spring bank holiday | Yes |
| 2027-07-12 (Mon 12 Jul) | Battle of the Boyne (Orangemen's Day) | Yes |
| 2027-08-30 (Mon 30 Aug) | Summer bank holiday | Yes |
| 2027-12-27 (Mon 27 Dec) | Christmas Day (substitute day) | Yes |
| 2027-12-28 (Tue 28 Dec) | Boxing Day (substitute day) | Yes |
Source: GOV.UK. Calendar file: United Kingdom, Bank holidays, Northern Ireland 2027 (.ics).
Canada
| Date | Holiday | Weekday off? |
|---|---|---|
| 2027-01-01 (Fri 1 Jan) | New Year's Day | Yes |
| 2027-03-26 (Fri 26 Mar) | Good Friday | Yes |
| 2027-05-24 (Mon 24 May) | Victoria Day | Yes |
| 2027-07-01 (Thu 1 Jul) | Canada Day | Yes |
| 2027-09-06 (Mon 6 Sept) | Labour Day | Yes |
| 2027-09-30 (Thu 30 Sept) | National Day for Truth and Reconciliation | Yes |
| 2027-10-11 (Mon 11 Oct) | Thanksgiving Day | Yes |
| 2027-11-11 (Thu 11 Nov) | Remembrance Day | Yes |
| 2027-12-25 (Sat 25 Dec) | Christmas Day (Saturday: a work day immediately before or after instead) | No, weekend |
| 2027-12-26 (Sun 26 Dec) | Boxing Day (Sunday: a work day immediately before or after instead) | No, weekend |
| 2027-12-27 (Mon 27 Dec) | Christmas Day, day off (assumed) | Yes |
| 2027-12-28 (Tue 28 Dec) | Boxing Day, day off (assumed) | Yes |
Source: Government of Canada, Canada Labour Code and Holidays Act. Calendar file: Canada, Federal general holidays 2027 (.ics). No government table for 2027 yet: dates worked out from the law. Thanksgiving is set by proclamation; the second Monday of October is the usual date. For Christmas and Boxing Day on a weekend the law gives the scheduled work day immediately before or after, without naming it; we assume Monday 27 and Tuesday 28 December.
The ten “general holidays” are the ones the Canada Labour Code gives employees of federally regulated employers. Provinces set their own lists for everyone else, with days such as Family Day in February in several provinces, Saint-Jean-Baptiste Day in Quebec on 24 June, and the Civic Holiday on the first Monday in August outside Quebec, though it is not a statutory holiday everywhere.
Australia
| Date | Holiday | Weekday off? |
|---|---|---|
| 2027-01-01 (Fri 1 Jan) | New Year's Day | Yes |
| 2027-01-26 (Tue 26 Jan) | Australia Day | Yes |
| 2027-03-26 (Fri 26 Mar) | Good Friday | Yes |
| 2027-03-27 (Sat 27 Mar) | Easter Saturday | No, weekend |
| 2027-03-28 (Sun 28 Mar) | Easter Sunday | No, weekend |
| 2027-03-29 (Mon 29 Mar) | Easter Monday | Yes |
| 2027-04-25 (Sun 25 Apr) | Anzac Day (Sunday) | No, weekend |
| 2027-04-26 (Mon 26 Apr) | Anzac Day (additional day) | Yes |
| 2027-06-14 (Mon 14 Jun) | King's Birthday | Yes |
| 2027-10-04 (Mon 4 Oct) | Labour Day | Yes |
| 2027-12-25 (Sat 25 Dec) | Christmas Day | No, weekend |
| 2027-12-26 (Sun 26 Dec) | Boxing Day | No, weekend |
| 2027-12-27 (Mon 27 Dec) | Christmas Day (additional day) | Yes |
| 2027-12-28 (Tue 28 Dec) | Boxing Day (additional day) | Yes |
Source: NSW Government. Calendar file: Australia, Public holidays, New South Wales 2027 (.ics). National days are the same in every state we checked (NSW, Queensland, Western Australia, South Australia); Labour Day and the King’s Birthday differ by state.
Australia’s states set their own holidays, so the table is New South Wales. New Year’s Day, Australia Day, Good Friday, Easter Monday, Anzac Day, Christmas and Boxing Day were the same in every state list we could read (NSW, Queensland, Western Australia and South Australia), and so were the additional days of 27 and 28 December. The others differ: Labour Day is 1 March in Western Australia, 3 May in Queensland and 4 October in NSW and South Australia; the King’s Birthday is 14 June in NSW and South Australia, 27 September in Western Australia and 4 October in Queensland. South Australia lists no extra day for Anzac Day. Check Victoria, Tasmania, the ACT and the Northern Territory on their own government pages.
Ireland
| Date | Holiday | Weekday off? |
|---|---|---|
| 2027-01-01 (Fri 1 Jan) | New Year's Day | Yes |
| 2027-02-01 (Mon 1 Feb) | St Brigid's Day | Yes |
| 2027-03-17 (Wed 17 Mar) | Saint Patrick's Day | Yes |
| 2027-03-29 (Mon 29 Mar) | Easter Monday | Yes |
| 2027-05-03 (Mon 3 May) | May public holiday | Yes |
| 2027-06-07 (Mon 7 Jun) | June public holiday | Yes |
| 2027-08-02 (Mon 2 Aug) | August public holiday | Yes |
| 2027-10-25 (Mon 25 Oct) | October public holiday | Yes |
| 2027-12-25 (Sat 25 Dec) | Christmas Day (Saturday: no automatic next working day off) | No, weekend |
| 2027-12-26 (Sun 26 Dec) | Saint Stephen's Day (Sunday: no automatic next working day off) | No, weekend |
Source: Citizens Information. Calendar file: Ireland, Public holidays 2027 (.ics).
Ireland has ten public holidays, “increased from 9 in 2022” when St Brigid’s Day was added, Citizens Information says. Good Friday is not one of them (“Good Friday is not a public holiday”), and when a holiday falls on a weekend: “you do not have any automatic legal entitlement to have the next working day off work.” You still get a public holiday benefit from your employer, but not necessarily a day off.
New Zealand
| Date | Holiday | Weekday off? |
|---|---|---|
| 2027-01-01 (Fri 1 Jan) | New Year's Day | Yes |
| 2027-01-02 (Sat 2 Jan) | Day after New Year's Day | No, weekend |
| 2027-01-04 (Mon 4 Jan) | Day after New Year's Day (observed) | Yes |
| 2027-02-06 (Sat 6 Feb) | Waitangi Day | No, weekend |
| 2027-02-08 (Mon 8 Feb) | Waitangi Day (observed) | Yes |
| 2027-03-26 (Fri 26 Mar) | Good Friday | Yes |
| 2027-03-29 (Mon 29 Mar) | Easter Monday | Yes |
| 2027-04-25 (Sun 25 Apr) | ANZAC Day | No, weekend |
| 2027-04-26 (Mon 26 Apr) | ANZAC Day (observed) | Yes |
| 2027-06-07 (Mon 7 Jun) | King's Birthday | Yes |
| 2027-06-25 (Fri 25 Jun) | Matariki | Yes |
| 2027-10-25 (Mon 25 Oct) | Labour Day | Yes |
| 2027-12-25 (Sat 25 Dec) | Christmas Day | No, weekend |
| 2027-12-26 (Sun 26 Dec) | Boxing Day | No, weekend |
| 2027-12-27 (Mon 27 Dec) | Christmas Day (observed) | Yes |
| 2027-12-28 (Tue 28 Dec) | Boxing Day (observed) | Yes |
Source: Employment New Zealand. Calendar file: New Zealand, National public holidays 2027 (.ics). Weekend holidays move to Monday (or Tuesday) for people who would not normally work that weekend day. The source page prints “Saturday 25 April” for ANZAC Day; 25 April 2027 is a Sunday.
Regional anniversary days are on top: Wellington on Monday 25 January, Auckland and Nelson on Monday 1 February, Canterbury on Friday 12 November and others, listed on the same Employment New Zealand page.
Singapore
| Date | Holiday | Weekday off? |
|---|---|---|
| 2027-01-01 (Fri 1 Jan) | New Year's Day | Yes |
| 2027-02-06 (Sat 6 Feb) | Chinese New Year | No, weekend |
| 2027-02-07 (Sun 7 Feb) | Chinese New Year (second day) | No, weekend |
| 2027-02-08 (Mon 8 Feb) | Chinese New Year (in lieu) (A public holiday if your rest day is Sunday 7 February) | Yes |
| 2027-03-10 (Wed 10 Mar) | Hari Raya Puasa | Yes |
| 2027-03-26 (Fri 26 Mar) | Good Friday | Yes |
| 2027-05-01 (Sat 1 May) | Labour Day (Saturday) | No, weekend |
| 2027-05-17 (Mon 17 May) | Hari Raya Haji | Yes |
| 2027-05-20 (Thu 20 May) | Vesak Day | Yes |
| 2027-08-09 (Mon 9 Aug) | National Day | Yes |
| 2027-10-28 (Thu 28 Oct) | Deepavali | Yes |
| 2027-12-25 (Sat 25 Dec) | Christmas Day (Saturday) | No, weekend |
Source: Ministry of Manpower. Calendar file: Singapore, Public holidays 2027 (.ics).
Singapore moves a Sunday holiday to Monday; a holiday on Saturday gives no public holiday in its place. Hari Raya Puasa, Hari Raya Haji, Vesak Day and Deepavali follow lunar or religious calendars, so their dates are the Ministry of Manpower’s, not a rule.
Germany
| Date | Holiday | Weekday off? |
|---|---|---|
| 2027-01-01 (Fri 1 Jan) | New Year's Day (Neujahr) | Yes |
| 2027-03-26 (Fri 26 Mar) | Good Friday (Karfreitag) | Yes |
| 2027-03-29 (Mon 29 Mar) | Easter Monday (Ostermontag) | Yes |
| 2027-05-01 (Sat 1 May) | Labour Day (Tag der Arbeit) (Saturday) | No, weekend |
| 2027-05-06 (Thu 6 May) | Ascension Day (Christi Himmelfahrt) | Yes |
| 2027-05-17 (Mon 17 May) | Whit Monday (Pfingstmontag) | Yes |
| 2027-10-03 (Sun 3 Oct) | German Unity Day (Tag der Deutschen Einheit) (Sunday) | No, weekend |
| 2027-12-25 (Sat 25 Dec) | Christmas Day (1. Weihnachtstag) (Saturday) | No, weekend |
| 2027-12-26 (Sun 26 Dec) | St Stephen's Day (2. Weihnachtstag) (Sunday) | No, weekend |
Source: Land Berlin (berlin.de), Bavarian and Baden-Württemberg interior ministries. Calendar file: Germany, Nationwide public holidays 2027 (.ics). Germany has no substitute days: a holiday on a weekend is simply lost.
Each Land adds its own: Epiphany (6 January) in Bavaria and Baden-Württemberg, International Women’s Day (8 March) in Berlin, Corpus Christi (Thursday 27 May 2027) and All Saints’ Day (1 November) in several Länder, Reformation Day (31 October) in several northern and eastern ones.
Europe
France, Spain, Italy, the Netherlands, Belgium, Portugal, Austria, Poland, Sweden, Denmark, Norway, Finland, the Czech Republic and Turkey. Few of them move a weekend holiday: Belgium gives a replacement day, Poland another day off for a Saturday holiday, and Spain a Monday for a Sunday one in some regions. Everywhere else in this list a holiday on a weekend is simply gone. Several countries also have eves (Christmas Eve, Midsummer Eve) that most people get off by agreement but the law does not count; the tables list them and the counts leave them out.
- France: 7 weekdays off, 254 working days
- Spain (national): 7 weekdays off, 254 working days
- Italy: 7 weekdays off, 254 working days (dates from the law)
- Netherlands: 5 weekdays off, 256 working days
- Belgium: 10 weekdays off, 251 working days
- Portugal: 8 weekdays off, 253 working days (dates from the law)
- Austria: 9 weekdays off, 252 working days (dates from the law)
- Poland: 8 weekdays off, 253 working days (dates from the law)
- Sweden: 5 weekdays off, 256 working days (dates from the law)
- Turkey: 11 weekdays off, 250 working days
- Denmark: 6 weekdays off, 255 working days (dates from the law)
- Norway: 6 weekdays off, 255 working days (dates from the law)
- Finland: 6 weekdays off, 255 working days
- Czech Republic: 9 weekdays off, 252 working days (dates from the law)
Asia and Pacific
Japan, India, China, South Korea, the Philippines, Indonesia and Thailand. China builds week-long breaks by moving weekend days and then works five weekend days in 2027 to make up for it; our working-day counts include those. South Korea and Thailand move a weekend holiday to Monday. Holidays that follow the moon (Eid, Lunar New Year, Vesak) are fixed by each government and Islamic dates can still shift by a day.
- Japan: 16 weekdays off, 245 working days
- India (central government, Delhi): 11 weekdays off, 250 working days
- China: 18 weekdays off, 248 working days
- South Korea: 15 weekdays off, 246 working days
- Philippines: 12 weekdays off, 249 working days
- Indonesia: 11 weekdays off, 250 working days
- Thailand (bank holidays): 18 weekdays off, 243 working days
Americas
Brazil, Mexico and Argentina, beside the United States and Canada above. Mexico and Argentina move some holidays to Mondays by law, so long weekends are planned in. Brazil’s federal list for 2027 comes out in late December.
- Brazil (federal): 7 weekdays off, 254 working days
- Mexico (federal): 5 weekdays off, 256 working days (dates from the law)
- Argentina: 12 weekdays off, 249 working days (dates from the law)
Middle East and Africa
South Africa, Israel and Kenya. Israel works Sunday to Thursday, so its Friday and Saturday holidays fall on the weekend and a Sunday holiday is a day off; the counts use that week. South Africa and Kenya move a Sunday holiday to Monday.
- South Africa: 10 weekdays off, 251 working days
- Israel: 5 weekdays off, 255 working days
- Kenya: 8 weekdays off, 253 working days (dates from the law)
Put them where the team plans
- Calendars. Google Calendar and Outlook import the .ics files above as all-day events.
- Jira. Board non-working days and Jira Service Management SLA calendars both need holidays, and some features ignore them. Jira holidays shows where to set them and how to import a file into an SLA calendar.
- Leave. Public holidays are not vacations, but they shrink the days a team has. Our app OutSync runs leave requests in Jira and Confluence, and its Advanced plan adds public-holiday calendars by region.
- Capacity. For the working days each month leaves, see Working days 2027, or count them for any date range with the business days calculator.
How we compiled this
- Each date comes from the government source named under its table, read between 2 and 13 November 2026: OPM, GOV.UK, canada.ca and the Canadian statutes, nsw.gov.au (with the Queensland, Western Australia and South Australia pages for the comparison), Citizens Information, Employment New Zealand, the Ministry of Manpower, and berlin.de with the Bavarian and Baden-Württemberg interior ministries.
- Every date was checked against the 2027 calendar for its weekday. One source has a slip: Employment New Zealand’s page calls ANZAC Day “Saturday 25 April”; 25 April 2027 is a Sunday, and the observed Monday 26 April follows its own rule.
- Canada has not published a 2027 table yet, so its dates follow the law, as noted under the table. The same goes for Italy, Portugal, Austria, Poland, Sweden, Denmark, Norway, the Czech Republic, Mexico, Brazil, Argentina and Kenya; each table says so.
- The 27 countries after Germany were collected on 13 November 2026 from ministries, official gazettes, central banks and law databases, each named under its table. Where a government site would not load for an automated reader (the Philippines), we used a mirror of the official text and say so.
- Not included yet: Malaysia (the official 2027 list would not load), the United Arab Emirates (no 2027 cabinet calendar; every Islamic date is still an estimate) and Colombia (no government page loaded, and a new July holiday is being challenged in court). We will add them once the official lists can be read.
Frequently asked questions
How many public holidays are there in 2027?
It depends on the country and region. Counting weekdays off for a Monday-to-Friday worker: 12 US federal holidays, 11 in New Zealand, 10 for Canada's federal employers and in Northern Ireland, 9 in Scotland and New South Wales, 8 in England and Wales, Ireland and Singapore, and 5 nationwide in Germany.
What happens when a holiday falls on a weekend in 2027?
The US, the UK, Canada, Australia and New Zealand move it to a weekday: Christmas on Saturday 25 December 2027 becomes Monday 27 (UK, Australia, New Zealand) or Friday 24 (US federal). Ireland, Germany and Singapore (for Saturdays) do not, so those holidays are lost.
Why does Germany have so few holidays in 2027?
Four of its nine nationwide holidays fall on a weekend (Labour Day, German Unity Day, Christmas Day and St Stephen's Day) and German law has no substitute days. The Länder add more, such as 6 January in Bavaria and Baden-Württemberg or 8 March in Berlin.
Can I import these holidays into Outlook, Google Calendar or Jira?
Yes. Each country has an .ics file below, with one all-day event per holiday and substitute day. Google Calendar and Outlook import .ics directly; Jira Service Management SLA calendars take the same files.
Is 31 December 2027 a holiday in the US?
For federal employees, yes: New Year's Day 2028 falls on a Saturday, so OPM's rule moves the holiday to Friday 31 December 2027. It is the one most 2027 lists miss.