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Is Saturday 1 January 2028 a US federal holidays business day?

No: Saturday 1 January 2028 is not a US federal holidays business day, because US federal holidays is closed at weekends; US federal holidays reopens on Monday 3 January 2028 (Zeitwide release 2026.11.04.1).

28 days of US federal holidays around Sat 1 Jan 2028

US federal holidays, Sat 25 Dec 2027 to Fri 21 Jan 2028
CalendarSat 25 Dec 2027Sun 26 Dec 2027Mon 27 Dec 2027Tue 28 Dec 2027Wed 29 Dec 2027Thu 30 Dec 2027Fri 31 Dec 2027Sat 1 Jan 2028Sun 2 Jan 2028Mon 3 Jan 2028Tue 4 Jan 2028Wed 5 Jan 2028Thu 6 Jan 2028Fri 7 Jan 2028Sat 8 Jan 2028Sun 9 Jan 2028Mon 10 Jan 2028Tue 11 Jan 2028Wed 12 Jan 2028Thu 13 Jan 2028Fri 14 Jan 2028Sat 15 Jan 2028Sun 16 Jan 2028Mon 17 Jan 2028Tue 18 Jan 2028Wed 19 Jan 2028Thu 20 Jan 2028Fri 21 Jan 2028
US federal holidaysUS federal holidays closed for the weekend Sat 25 Dec 2027US federal holidays closed for the weekend Sun 26 Dec 2027US federal holidays open Mon 27 Dec 2027US federal holidays open Tue 28 Dec 2027US federal holidays open Wed 29 Dec 2027US federal holidays open Thu 30 Dec 2027US federal holidays closed Fri 31 Dec 2027: New Year's DayUS federal holidays closed for the weekend Sat 1 Jan 2028US federal holidays closed for the weekend Sun 2 Jan 2028US federal holidays open Mon 3 Jan 2028US federal holidays open Tue 4 Jan 2028US federal holidays open Wed 5 Jan 2028US federal holidays open Thu 6 Jan 2028US federal holidays open Fri 7 Jan 2028US federal holidays closed for the weekend Sat 8 Jan 2028US federal holidays closed for the weekend Sun 9 Jan 2028US federal holidays open Mon 10 Jan 2028US federal holidays open Tue 11 Jan 2028US federal holidays open Wed 12 Jan 2028US federal holidays open Thu 13 Jan 2028US federal holidays open Fri 14 Jan 2028US federal holidays closed for the weekend Sat 15 Jan 2028US federal holidays closed for the weekend Sun 16 Jan 2028US federal holidays closed Mon 17 Jan 2028: Birthday of Martin Luther King, Jr.US federal holidays open Tue 18 Jan 2028US federal holidays open Wed 19 Jan 2028US federal holidays open Thu 20 Jan 2028US federal holidays open Fri 21 Jan 2028
  • Open
  • Closed
  • Weekend
  • Holiday on a weekend

Other calendars on Sat 1 Jan 2028

Saturday 1 January 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 and a holiday Sat 1 Jan 2028: New Year's Day (TARGET closing day)New Year's Day (TARGET closing day)
CHAPS (GB-CHAPS)CHAPS closed for the weekend Sat 1 Jan 2028Weekend
England and Wales bank holidays (GB-EAW)England and Wales bank holidays closed for the weekend Sat 1 Jan 2028Weekend
FedACH Services (US-FEDACH)FedACH Services closed for the weekend and a holiday Sat 1 Jan 2028: New Year's DayNew Year's Day
FedNow Service (US-FEDNOW)FedNow Service open Sat 1 Jan 2028Business day
Fedwire Funds Service (US-FEDWIRE)Fedwire Funds Service closed for the weekend and a holiday Sat 1 Jan 2028: New Year's DayNew Year's 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 Sat 1 Jan 2028

US federal holidays revision 44, published .

Cite this answer
Zeitwide (2026). US-FEDERAL on 2028-01-01. Release 2026.11.04.1. https://zeitwide.com/calendars/US-FEDERAL/2028-01-01

Questions people ask

When does US federal holidays reopen after Saturday 1 January 2028?

US federal holidays reopens on Monday 3 January 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/2028-01-01

{
  "date": "2028-01-01",
  "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