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Is Monday 31 May 2027 a US federal holidays business day?

No: Monday 31 May 2027 is not a US federal holidays business day, because US federal holidays is closed for Memorial Day, according to U.S. Office of Personnel Management; US federal holidays reopens on Tuesday 1 June 2027 (Zeitwide release 2026.11.03.1).

28 days of US federal holidays around Mon 31 May 2027

US federal holidays, Mon 24 May 2027 to Sun 20 Jun 2027
CalendarMon 24 May 2027Tue 25 May 2027Wed 26 May 2027Thu 27 May 2027Fri 28 May 2027Sat 29 May 2027Sun 30 May 2027Mon 31 May 2027Tue 1 Jun 2027Wed 2 Jun 2027Thu 3 Jun 2027Fri 4 Jun 2027Sat 5 Jun 2027Sun 6 Jun 2027Mon 7 Jun 2027Tue 8 Jun 2027Wed 9 Jun 2027Thu 10 Jun 2027Fri 11 Jun 2027Sat 12 Jun 2027Sun 13 Jun 2027Mon 14 Jun 2027Tue 15 Jun 2027Wed 16 Jun 2027Thu 17 Jun 2027Fri 18 Jun 2027Sat 19 Jun 2027Sun 20 Jun 2027
US federal holidaysUS federal holidays open Mon 24 May 2027US federal holidays open Tue 25 May 2027US federal holidays open Wed 26 May 2027US federal holidays open Thu 27 May 2027US federal holidays open Fri 28 May 2027US federal holidays closed for the weekend Sat 29 May 2027US federal holidays closed for the weekend Sun 30 May 2027US federal holidays closed Mon 31 May 2027: Memorial DayUS federal holidays open Tue 1 Jun 2027US federal holidays open Wed 2 Jun 2027US federal holidays open Thu 3 Jun 2027US federal holidays open Fri 4 Jun 2027US federal holidays closed for the weekend Sat 5 Jun 2027US federal holidays closed for the weekend Sun 6 Jun 2027US federal holidays open Mon 7 Jun 2027US federal holidays open Tue 8 Jun 2027US federal holidays open Wed 9 Jun 2027US federal holidays open Thu 10 Jun 2027US federal holidays open Fri 11 Jun 2027US federal holidays closed for the weekend Sat 12 Jun 2027US federal holidays closed for the weekend Sun 13 Jun 2027US federal holidays open Mon 14 Jun 2027US federal holidays open Tue 15 Jun 2027US federal holidays open Wed 16 Jun 2027US federal holidays open Thu 17 Jun 2027US federal holidays closed Fri 18 Jun 2027: Juneteenth National Independence DayUS federal holidays closed for the weekend Sat 19 Jun 2027US federal holidays closed for the weekend Sun 20 Jun 2027
  • Open
  • Closed
  • Weekend
  • Holiday on a weekend

Other calendars on Mon 31 May 2027

Monday 31 May 2027 on 7 other calendars
CalendarStatusWhy
Germany: nationwide public holidays (DE)Germany: nationwide public holidays open Mon 31 May 2027Business day
T2 (TARGET RTGS) (EU-T2)T2 (TARGET RTGS) open Mon 31 May 2027Business day
CHAPS (GB-CHAPS)CHAPS closed Mon 31 May 2027: Spring bank holidaySpring bank holiday
England and Wales bank holidays (GB-EAW)England and Wales bank holidays closed Mon 31 May 2027: Spring bank holidaySpring bank holiday
FedACH Services (US-FEDACH)FedACH Services closed Mon 31 May 2027: Memorial DayMemorial Day
FedNow Service (US-FEDNOW)FedNow Service open Mon 31 May 2027Business day
Fedwire Funds Service (US-FEDWIRE)Fedwire Funds Service closed Mon 31 May 2027: Memorial DayMemorial Day

Sources

Zeitwide release 2026.11.03.1. Evidence and signed receipt for US federal holidays on Mon 31 May 2027

Cite this answer
Zeitwide (2026). US-FEDERAL on 2027-05-31. Release 2026.11.03.1. https://zeitwide.com/calendars/US-FEDERAL/2027-05-31

Questions people ask

When does US federal holidays reopen after Monday 31 May 2027?

US federal holidays reopens on Tuesday 1 June 2027.

Which days is US federal holidays closed?

US federal holidays is closed every Saturday and Sunday. It also closes on the holidays published by U.S. Office of Personnel Management.

Where does this answer come from?

U.S. Office of Personnel Management, last read 28 Oct 2026, 15:46 UTC. The operator published this date. It is in Zeitwide release 2026.11.03.1.

The same answer from the API

curl https://api.zeitwide.com/v1/calendars/US-FEDERAL/days/2027-05-31

{
  "date": "2027-05-31",
  "is_business_day": false,
  "reason": "Memorial Day",
  "dataset_release": "2026.11.03.1"
}

Agents get it from the is_business_day MCP tool. The developer quickstart covers keys, MCP and webhooks