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Is Monday 18 January 2027 a US federal holidays business day?

No.

US federal holidays is closed: Birthday of Martin Luther King, Jr..

ClosedPublished · 1 source
Next business day
Tue 19 Jan 2027
Previous business day
Fri 15 Jan 2027

Checked 28 Oct 2026, 15:46 UTC · release 2026.10.29.1

How we know

Around this date

  1. Mon 11, Monday 11 January 2027: open
  2. Tue 12, Tuesday 12 January 2027: open
  3. Wed 13, Wednesday 13 January 2027: open
  4. Thu 14, Thursday 14 January 2027: open
  5. Fri 15, Friday 15 January 2027: open
  6. Sat 16, Saturday 16 January 2027: weekend
  7. Sun 17, Sunday 17 January 2027: weekend
  8. Mon 18, Monday 18 January 2027: closed, Birthday of Martin Luther King, Jr.
  9. Tue 19, Tuesday 19 January 2027: open
  10. Wed 20, Wednesday 20 January 2027: open
  11. Thu 21, Thursday 21 January 2027: open
  12. Fri 22, Friday 22 January 2027: open
  13. Sat 23, Saturday 23 January 2027: weekend
  14. Sun 24, Sunday 24 January 2027: weekend
  15. Mon 25, Monday 25 January 2027: open
  16. Tue 26, Tuesday 26 January 2027: open
  17. Wed 27, Wednesday 27 January 2027: open
  18. Thu 28, Thursday 28 January 2027: open
  19. Fri 29, Friday 29 January 2027: open
  20. Sat 30, Saturday 30 January 2027: weekend
  • Open
  • Closed
  • Weekend
  • Holiday on a weekend

Mon 18 Jan on other calendars

CalendarStatusWhy
Germany: nationwide public holidays DEOpenBusiness day
T2 (TARGET RTGS) EU-T2OpenBusiness day
CHAPS GB-CHAPSOpenBusiness day
England and Wales bank holidays GB-EAWOpenBusiness day
FedACH Services US-FEDACHClosedMartin Luther King Jr. Day
FedNow Service US-FEDNOWOpenBusiness day
Fedwire Funds Service US-FEDWIREClosedMartin Luther King Jr. Day

Get this answer in code

curl -H "Authorization: Bearer $ZEITWIDE_API_KEY" \
  https://api.zeitwide.com/v1/calendars/US-FEDERAL/days/2027-01-18

{
  "date": "2027-01-18",
  "is_business_day": false,
  "reason": "Birthday of Martin Luther King, Jr.",
  "basis": "published",
  "dataset_release": "2026.10.29.1"
}

Agents get the same answer from the is_business_day MCP tool. Developer quickstart

Questions people ask

Is Monday 18 January 2027 a US federal holidays business day?
No. US federal holidays is closed on Monday 18 January 2027: Birthday of Martin Luther King, Jr.. Next business day: Tue 19 Jan 2027. Previous: Fri 15 Jan 2027. Backed by official sources.
When does US federal holidays settle again?
Tuesday 19 January 2027.
Can I be warned about changes like this?
Yes. Sign in and add US federal holidays to an alert rule for webhook alerts.