Skip to content
Zeitwide
Sign inGet API key

Is Sunday 10 September 2028 a US federal holidays business day?

No: Sunday 10 September 2028 is not a US federal holidays business day, because US federal holidays is closed at weekends; US federal holidays reopens on Monday 11 September 2028 (Zeitwide release 2026.11.04.1).

28 days of US federal holidays around Sun 10 Sept 2028

US federal holidays, Sun 3 Sept 2028 to Sat 30 Sept 2028
CalendarSun 3 Sept 2028Mon 4 Sept 2028Tue 5 Sept 2028Wed 6 Sept 2028Thu 7 Sept 2028Fri 8 Sept 2028Sat 9 Sept 2028Sun 10 Sept 2028Mon 11 Sept 2028Tue 12 Sept 2028Wed 13 Sept 2028Thu 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 2028
US federal holidaysUS federal holidays closed for the weekend Sun 3 Sept 2028US federal holidays closed Mon 4 Sept 2028: Labor DayUS federal holidays open Tue 5 Sept 2028US federal holidays open Wed 6 Sept 2028US federal holidays open Thu 7 Sept 2028US federal holidays open Fri 8 Sept 2028US federal holidays closed for the weekend Sat 9 Sept 2028US federal holidays closed for the weekend Sun 10 Sept 2028US federal holidays open Mon 11 Sept 2028US federal holidays open Tue 12 Sept 2028US federal holidays open Wed 13 Sept 2028US 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 2028
  • Open
  • Closed
  • Weekend
  • Holiday on a weekend

Other calendars on Sun 10 Sept 2028

Sunday 10 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) closed for the weekend Sun 10 Sept 2028Weekend
CHAPS (GB-CHAPS)CHAPS closed for the weekend Sun 10 Sept 2028Weekend
England and Wales bank holidays (GB-EAW)England and Wales bank holidays closed for the weekend Sun 10 Sept 2028Weekend
FedACH Services (US-FEDACH)FedACH Services closed for the weekend Sun 10 Sept 2028Weekend
FedNow Service (US-FEDNOW)FedNow Service open Sun 10 Sept 2028Business day
Fedwire Funds Service (US-FEDWIRE)Fedwire Funds Service closed for the weekend Sun 10 Sept 2028Weekend

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 Sun 10 Sept 2028

US federal holidays revision 44, published .

Cite this answer
Zeitwide (2026). US-FEDERAL on 2028-09-10. Release 2026.11.04.1. https://zeitwide.com/calendars/US-FEDERAL/2028-09-10

Questions people ask

When does US federal holidays reopen after Sunday 10 September 2028?

US federal holidays reopens on Monday 11 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/2028-09-10

{
  "date": "2028-09-10",
  "is_business_day": false,
  "dataset_release": "2026.11.04.1"
}

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