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Is Thursday 21 September 2028 a US federal holidays business day?

Yes: Thursday 21 September 2028 is a US federal holidays business day, as no closure for it appears in U.S. Office of Personnel Management; the next US federal holidays business day is Friday 22 September 2028 (Zeitwide release 2026.11.04.1).

28 days of US federal holidays around Thu 21 Sept 2028

US federal holidays, Thu 14 Sept 2028 to Wed 11 Oct 2028
CalendarThu 14 Sept 2028Fri 15 Sept 2028Sat 16 Sept 2028Sun 17 Sept 2028Mon 18 Sept 2028Tue 19 Sept 2028Wed 20 Sept 2028Thu 21 Sept 2028Fri 22 Sept 2028Sat 23 Sept 2028Sun 24 Sept 2028Mon 25 Sept 2028Tue 26 Sept 2028Wed 27 Sept 2028Thu 28 Sept 2028Fri 29 Sept 2028Sat 30 Sept 2028Sun 1 Oct 2028Mon 2 Oct 2028Tue 3 Oct 2028Wed 4 Oct 2028Thu 5 Oct 2028Fri 6 Oct 2028Sat 7 Oct 2028Sun 8 Oct 2028Mon 9 Oct 2028Tue 10 Oct 2028Wed 11 Oct 2028
US federal holidaysUS federal holidays open Thu 14 Sept 2028US federal holidays open Fri 15 Sept 2028US federal holidays closed for the weekend Sat 16 Sept 2028US federal holidays closed for the weekend Sun 17 Sept 2028US federal holidays open Mon 18 Sept 2028US federal holidays open Tue 19 Sept 2028US federal holidays open Wed 20 Sept 2028US federal holidays open Thu 21 Sept 2028US federal holidays open Fri 22 Sept 2028US federal holidays closed for the weekend Sat 23 Sept 2028US federal holidays closed for the weekend Sun 24 Sept 2028US federal holidays open Mon 25 Sept 2028US federal holidays open Tue 26 Sept 2028US federal holidays open Wed 27 Sept 2028US federal holidays open Thu 28 Sept 2028US federal holidays open Fri 29 Sept 2028US federal holidays closed for the weekend Sat 30 Sept 2028US federal holidays closed for the weekend Sun 1 Oct 2028US federal holidays open Mon 2 Oct 2028US federal holidays open Tue 3 Oct 2028US federal holidays open Wed 4 Oct 2028US federal holidays open Thu 5 Oct 2028US federal holidays open Fri 6 Oct 2028US federal holidays closed for the weekend Sat 7 Oct 2028US federal holidays closed for the weekend Sun 8 Oct 2028US federal holidays closed Mon 9 Oct 2028: Columbus DayUS federal holidays open Tue 10 Oct 2028US federal holidays open Wed 11 Oct 2028
  • Open
  • Closed
  • Weekend
  • Holiday on a weekend

Other calendars on Thu 21 Sept 2028

Thursday 21 September 2028 on 7 other calendars
CalendarStatusWhy
Germany: nationwide public holidays (DE)No dataOutside this calendar's sources
T2 (TARGET RTGS) (EU-T2)T2 (TARGET RTGS) open Thu 21 Sept 2028Business day
CHAPS (GB-CHAPS)CHAPS open Thu 21 Sept 2028Business day
England and Wales bank holidays (GB-EAW)England and Wales bank holidays open Thu 21 Sept 2028Business day
FedACH Services (US-FEDACH)FedACH Services open Thu 21 Sept 2028Business day
FedNow Service (US-FEDNOW)FedNow Service open Thu 21 Sept 2028Business day
Fedwire Funds Service (US-FEDWIRE)Fedwire Funds Service open Thu 21 Sept 2028Business day

Sources

No entry decides this date, so US federal holidays's weekend rule does. US federal holidays is closed every Saturday and Sunday.

Zeitwide release 2026.11.04.1. Evidence and signed receipt for US federal holidays on Thu 21 Sept 2028

US federal holidays revision 44, published .

Cite this answer
Zeitwide (2026). US-FEDERAL on 2028-09-21. Release 2026.11.04.1. https://zeitwide.com/calendars/US-FEDERAL/2028-09-21

Questions people ask

What is the next US federal holidays business day after Thursday 21 September 2028?

The next US federal holidays business day is Friday 22 September 2028.

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?

The calendar's weekend rule and no closure for it in U.S. Office of Personnel Management, in Zeitwide release 2026.11.04.1.

The same answer from the API

curl https://api.zeitwide.com/v1/calendars/US-FEDERAL/days/2028-09-21

{
  "date": "2028-09-21",
  "is_business_day": true,
  "dataset_release": "2026.11.04.1"
}

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