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Is Saturday 21 August 2027 a US federal holidays business day?

No: Saturday 21 August 2027 is not a US federal holidays business day, because US federal holidays is closed at weekends; US federal holidays reopens on Monday 23 August 2027 (Zeitwide release 2026.11.03.1).

28 days of US federal holidays around Sat 21 Aug 2027

US federal holidays, Sat 14 Aug 2027 to Fri 10 Sept 2027
CalendarSat 14 Aug 2027Sun 15 Aug 2027Mon 16 Aug 2027Tue 17 Aug 2027Wed 18 Aug 2027Thu 19 Aug 2027Fri 20 Aug 2027Sat 21 Aug 2027Sun 22 Aug 2027Mon 23 Aug 2027Tue 24 Aug 2027Wed 25 Aug 2027Thu 26 Aug 2027Fri 27 Aug 2027Sat 28 Aug 2027Sun 29 Aug 2027Mon 30 Aug 2027Tue 31 Aug 2027Wed 1 Sept 2027Thu 2 Sept 2027Fri 3 Sept 2027Sat 4 Sept 2027Sun 5 Sept 2027Mon 6 Sept 2027Tue 7 Sept 2027Wed 8 Sept 2027Thu 9 Sept 2027Fri 10 Sept 2027
US federal holidaysUS federal holidays closed for the weekend Sat 14 Aug 2027US federal holidays closed for the weekend Sun 15 Aug 2027US federal holidays open Mon 16 Aug 2027US federal holidays open Tue 17 Aug 2027US federal holidays open Wed 18 Aug 2027US federal holidays open Thu 19 Aug 2027US federal holidays open Fri 20 Aug 2027US federal holidays closed for the weekend Sat 21 Aug 2027US federal holidays closed for the weekend Sun 22 Aug 2027US federal holidays open Mon 23 Aug 2027US federal holidays open Tue 24 Aug 2027US federal holidays open Wed 25 Aug 2027US federal holidays open Thu 26 Aug 2027US federal holidays open Fri 27 Aug 2027US federal holidays closed for the weekend Sat 28 Aug 2027US federal holidays closed for the weekend Sun 29 Aug 2027US federal holidays open Mon 30 Aug 2027US federal holidays open Tue 31 Aug 2027US federal holidays open Wed 1 Sept 2027US federal holidays open Thu 2 Sept 2027US federal holidays open Fri 3 Sept 2027US federal holidays closed for the weekend Sat 4 Sept 2027US federal holidays closed for the weekend Sun 5 Sept 2027US federal holidays closed Mon 6 Sept 2027: Labor DayUS federal holidays open Tue 7 Sept 2027US federal holidays open Wed 8 Sept 2027US federal holidays open Thu 9 Sept 2027US federal holidays open Fri 10 Sept 2027
  • Open
  • Closed
  • Weekend
  • Holiday on a weekend

Other calendars on Sat 21 Aug 2027

Saturday 21 August 2027 on 7 other calendars
CalendarStatusWhy
Germany: nationwide public holidays (DE)Germany: nationwide public holidays closed for the weekend Sat 21 Aug 2027Weekend
T2 (TARGET RTGS) (EU-T2)T2 (TARGET RTGS) closed for the weekend Sat 21 Aug 2027Weekend
CHAPS (GB-CHAPS)CHAPS closed for the weekend Sat 21 Aug 2027Weekend
England and Wales bank holidays (GB-EAW)England and Wales bank holidays closed for the weekend Sat 21 Aug 2027Weekend
FedACH Services (US-FEDACH)FedACH Services closed for the weekend Sat 21 Aug 2027Weekend
FedNow Service (US-FEDNOW)FedNow Service open Sat 21 Aug 2027Business day
Fedwire Funds Service (US-FEDWIRE)Fedwire Funds Service closed for the weekend Sat 21 Aug 2027Weekend

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 2026.11.03.1. Evidence and signed receipt for US federal holidays on Sat 21 Aug 2027

Cite this answer
Zeitwide (2026). US-FEDERAL on 2027-08-21. Release 2026.11.03.1. https://zeitwide.com/calendars/US-FEDERAL/2027-08-21

Questions people ask

When does US federal holidays reopen after Saturday 21 August 2027?

US federal holidays reopens on Monday 23 August 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?

The calendar's weekend rule and no closure for it in U.S. Office of Personnel Management, in Zeitwide release 2026.11.03.1.

The same answer from the API

curl https://api.zeitwide.com/v1/calendars/US-FEDERAL/days/2027-08-21

{
  "date": "2027-08-21",
  "is_business_day": false,
  "dataset_release": "2026.11.03.1"
}

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