Is Sunday 23 August 2026 a US federal holidays business day?

No.

US federal holidays does not settle at weekends.

Weekend

Next business day: Mon 24 Aug 2026
Previous business day: Fri 21 Aug 2026

Decided by the weekend rule: saturday and sunday are closed on US federal holidays.

release 2026.10.29.1

Sun 23 Aug on other calendars

Calendar	Status	Why
Germany: nationwide public holidays DE	No data	Outside this calendar's sources
T2 (TARGET RTGS) EU-T2	Weekend	Weekend
CHAPS GB-CHAPS	Weekend	Weekend
England and Wales bank holidays GB-EAW	Weekend	Weekend
FedACH Services US-FEDACH	Weekend	Weekend
FedNow Service US-FEDNOW	Open	Business day
Fedwire Funds Service US-FEDWIRE	Weekend	Weekend

Get this answer in code

curl -H "Authorization: Bearer $ZEITWIDE_API_KEY" \
  https://api.zeitwide.com/v1/calendars/US-FEDERAL/days/2026-08-23

{
  "date": "2026-08-23",
  "is_business_day": false,
  "dataset_release": "2026.10.29.1"
}

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

Questions people ask

Is Sunday 23 August 2026 a US federal holidays business day?: No. Sunday 23 August 2026 is a weekend day, and US federal holidays does not settle at weekends. Next business day: Mon 24 Aug 2026. Previous: Fri 21 Aug 2026. Backed by official sources.
When does US federal holidays settle again?: Monday 24 August 2026.
Can I be warned about changes like this?: Yes. Sign in and add US federal holidays to an alert rule for webhook alerts.

Around this date

Sun 23 Aug on other calendars

Get this answer in code

Questions people ask