Holiday API™
Countries Developers Use Cases Pricing Contact LoginSignup

When is Citizenship Day in Oklahoma, United States?

Citizenship Day falls on Friday, September 17th, 2021 (202 days from now) in Oklahoma, United States.

Is Citizenship Day a public holiday?

Want to include this holiday information in your website or application? Get started for free.

Year Date Weekday Name
2017 September 18th Monday Citizenship Day (Observed)
2018 September 17th Monday Citizenship Day
2019 September 17th Tuesday Citizenship Day
2020 September 17th Thursday Citizenship Day
2021 September 17th Friday Citizenship Day
2022 September 16th Friday Citizenship Day (Observed)
2023 September 18th Monday Citizenship Day (Observed)
2024 September 17th Tuesday Citizenship Day
2025 September 17th Wednesday Citizenship Day
2026 September 17th Thursday Citizenship Day
Holiday data for far-reaching years is subject to change due to laws and government decrees.
Long weekends are based on non-working days and not Saturday and Sunday explicitly.

We are continuously monitoring for changes to this data to ensure we're providing the most accurate information possible.
If you happen to notice a mistake, please get in touch.
To retrieve this list of holidays, simply make a GET request to /v1/holidays:
GET /v1/holidays
Copy
$ curl -G -d country="US-OK" -d year="2020" -d pretty
-d key="__YOUR_API_KEY__" "https://holidayapi.com/v1/holidays"
import "github.com/joshtronic/go-holidayapi"
hapi := holidayapi.NewV1("__YOUR_API_KEY__")
holidays, err := hapi.Holidays(map[string]interface{}{
  "country": "US-OK",
  "year": "2020",
})
import { HolidayAPI } from 'holidayapi';
const key = '__YOUR_API_KEY__'
const holidayApi = new HolidayAPI({ key });
holidayApi.holidays({
  country: 'US-OK',
  year: '2020',
});
$key = '__YOUR_API_KEY__';
$holiday_api = new \HolidayAPI\Client(['key' => $key]);
$holidays = $holiday_api->holidays([
  'country' => 'US-OK',
  'year' => '2020',
]);
$Body = @{}
$Body.key = "__YOUR_API_KEY__"
$Body.country = "US-OK"
$Body.year = "2020"
$Url = "https://holidayapi.com/v1/holidays"
$Result = Invoke-RestMethod -Uri $Url -Body $Body
$Result.holidays
import holidayapi
key = '__YOUR_API_KEY__'
hapi = holidayapi.v1(key)
holidays = hapi.holidays({
  'country': 'US-OK',
  'year': '2020',
})
require 'ruby-holidayapi'
key = '__YOUR_API_KEY__'
hapi = HolidayAPI::V1.new(key)
holidays = hapi.holidays({
  'country': 'US-OK',
  'year': '2020',
})