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Calendarific API

calendarific.com · Developer Tools

Developer Tools API Key Free Tier Holidays Calendar Developer Tools

Public holidays and observances for 230+ countries and 3,000+ states/regions. JSON API. Free tier: 1,000 requests/month.

Authentication

API Key Free API key at calendarific.com. Pass as ?api_key= query parameter.

Sample Requests

GET Get US holidays

Get all US public holidays for 2026.

https://calendarific.com/api/v2/holidays?year=2026&api_key=YOUR_KEY&country=US

Hover any highlighted part to learn what it does

curl -X GET "https://calendarific.com/api/v2/holidays?year=2026&api_key=YOUR_KEY&country=US"
import requests
params = {
    "year": "2026",
    "api_key": "YOUR_KEY",
    "country": "US"
}
response = requests.get(
    "https://calendarific.com/api/v2/holidays",
    params=params,
)
print(response.json())
const url = new URL('https://calendarific.com/api/v2/holidays');
url.searchParams.set('year', '2026');
url.searchParams.set('api_key', 'YOUR_KEY');
url.searchParams.set('country', 'US');

const response = await fetch(url); 
const data = await response.json();
console.log(data);
package main

import (
	"fmt"
	"io"
	"net/http"
	"net/url"
)

func main() {
	baseURL, _ := url.Parse("https://calendarific.com/api/v2/holidays")
	q := baseURL.Query()
	q.Set("year", "2026")
	q.Set("api_key", "YOUR_KEY")
	q.Set("country", "US")
	baseURL.RawQuery = q.Encode()
	targetURL := baseURL.String()
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}
require "net/http"
require "json"

uri = URI("https://calendarific.com/api/v2/holidays")
uri.query = URI.encode_www_form({
  "year" => "2026",
  "api_key" => "YOUR_KEY",
  "country" => "US"
})

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)
<?php
$url = "https://calendarific.com/api/v2/holidays?" . http_build_query([
    "year" => "2026",
    "api_key" => "YOUR_KEY",
    "country" => "US"
]);
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

Postman Setup Guide

Get Postman ↗
  1. Get a free API key at calendarific.com
  2. GET /holidays?api_key=KEY&country=US&year=2026
  3. Country code: ISO 3166-1 alpha-2 (US, GB, DE, FR, JP, etc.)
  4. Type filter: ?type=national,religious,observance
  5. Location-specific: ?location=us-ny for New York state holidays

Open documentation ↗