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Is Sunday 21 March 2066 a FedNow Service business day?

Yes: Sunday 21 March 2066 is a FedNow Service business day; the next FedNow Service business day is Monday 22 March 2066 (Zeitwide release 2026.11.04.1).

28 days of FedNow Service around Sun 21 Mar 2066

FedNow Service, Sun 14 Mar 2066 to Sat 10 Apr 2066
CalendarSun 14 Mar 2066Mon 15 Mar 2066Tue 16 Mar 2066Wed 17 Mar 2066Thu 18 Mar 2066Fri 19 Mar 2066Sat 20 Mar 2066Sun 21 Mar 2066Mon 22 Mar 2066Tue 23 Mar 2066Wed 24 Mar 2066Thu 25 Mar 2066Fri 26 Mar 2066Sat 27 Mar 2066Sun 28 Mar 2066Mon 29 Mar 2066Tue 30 Mar 2066Wed 31 Mar 2066Thu 1 Apr 2066Fri 2 Apr 2066Sat 3 Apr 2066Sun 4 Apr 2066Mon 5 Apr 2066Tue 6 Apr 2066Wed 7 Apr 2066Thu 8 Apr 2066Fri 9 Apr 2066Sat 10 Apr 2066
FedNow ServiceFedNow Service open Sun 14 Mar 2066FedNow Service open Mon 15 Mar 2066FedNow Service open Tue 16 Mar 2066FedNow Service open Wed 17 Mar 2066FedNow Service open Thu 18 Mar 2066FedNow Service open Fri 19 Mar 2066FedNow Service open Sat 20 Mar 2066FedNow Service open Sun 21 Mar 2066FedNow Service open Mon 22 Mar 2066FedNow Service open Tue 23 Mar 2066FedNow Service open Wed 24 Mar 2066FedNow Service open Thu 25 Mar 2066FedNow Service open Fri 26 Mar 2066FedNow Service open Sat 27 Mar 2066FedNow Service open Sun 28 Mar 2066FedNow Service open Mon 29 Mar 2066FedNow Service open Tue 30 Mar 2066FedNow Service open Wed 31 Mar 2066FedNow Service open Thu 1 Apr 2066FedNow Service open Fri 2 Apr 2066FedNow Service open Sat 3 Apr 2066FedNow Service open Sun 4 Apr 2066FedNow Service open Mon 5 Apr 2066FedNow Service open Tue 6 Apr 2066FedNow Service open Wed 7 Apr 2066FedNow Service open Thu 8 Apr 2066FedNow Service open Fri 9 Apr 2066FedNow Service open Sat 10 Apr 2066
  • Open
  • Closed
  • Weekend
  • Holiday on a weekend

Other calendars on Sun 21 Mar 2066

Sunday 21 March 2066 on 7 other calendars
CalendarStatusWhy
Germany: nationwide public holidays (DE)No dataOutside this calendar's sources
T2 (TARGET RTGS) (EU-T2)No dataOutside this calendar's sources
CHAPS (GB-CHAPS)No dataOutside this calendar's sources
England and Wales bank holidays (GB-EAW)No dataOutside this calendar's sources
FedACH Services (US-FEDACH)No dataOutside this calendar's sources
US federal holidays (US-FEDERAL)No dataOutside this calendar's sources
Fedwire Funds Service (US-FEDWIRE)No dataOutside this calendar's sources

Sources

No entry decides this date, so FedNow Service's weekend rule does. FedNow Service has no weekend: only published closures stop it.

Zeitwide release 2026.11.04.1. Evidence and signed receipt for FedNow Service on Sun 21 Mar 2066

FedNow Service has no published revision yet.

Cite this answer
Zeitwide (2026). US-FEDNOW on 2066-03-21. Release 2026.11.04.1. https://zeitwide.com/calendars/US-FEDNOW/2066-03-21

Questions people ask

What is the next FedNow Service business day after Sunday 21 March 2066?

The next FedNow Service business day is Monday 22 March 2066.

What are FedNow Service's operating hours?

FedNow Service is open around the clock on every day of the year.

Where does this answer come from?

The calendar's weekend rule, in Zeitwide release 2026.11.04.1.

The same answer from the API

curl https://api.zeitwide.com/v1/calendars/US-FEDNOW/days/2066-03-21

{
  "date": "2066-03-21",
  "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