You can access the Japan Business Day & Holiday Calculator (営業日・祝日・和暦) programmatically from your own applications by using the Apify API. You can also choose the language preference from below. To use the Apify API, you’ll need an Apify account and your API token, found in API & Integrations in Apify Console.

Python

JavaScript

CLI

OpenAPI

HTTP

MCP

1import { ApifyClient } from 'apify-client';
2
3// Initialize the ApifyClient with your Apify API token
4// Replace the '<YOUR_API_TOKEN>' with your token
5const client = new ApifyClient({
6    token: '<YOUR_API_TOKEN>',
7});
8
9// Prepare Actor input
10const input = {
11    "tasks": [
12        {
13            "type": "addBusinessDays",
14            "date": "2026-10-30",
15            "days": 3
16        },
17        {
18            "type": "isBusinessDay",
19            "date": "2026-11-03"
20        },
21        {
22            "type": "businessDaysBetween",
23            "from": "2026-10-01",
24            "to": "2026-11-01"
25        },
26        {
27            "type": "holidays",
28            "year": 2027
29        },
30        {
31            "type": "toWareki",
32            "date": "2026-10-14"
33        },
34        {
35            "type": "fromWareki",
36            "text": "令和元年5月1日"
37        },
38        {
39            "type": "info",
40            "date": "2026-12-31"
41        }
42    ]
43};
44
45// Run the Actor and wait for it to finish
46const run = await client.actor("fontom.ai.plus/japan-business-calendar").call(input);
47
48// Fetch and print Actor results from the run's dataset (if any)
49console.log('Results from dataset');
50console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
51const { items } = await client.dataset(run.defaultDatasetId).listItems();
52items.forEach((item) => {
53    console.dir(item);
54});
55
56// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

Japan Business Days & Holidays API (営業日・祝日) API in JavaScript

The Apify API client for JavaScript is the official library that allows you to use Japan Business Day & Holiday Calculator (営業日・祝日・和暦) API in JavaScript or TypeScript, providing convenience functions and automatic retries on errors.

Install the apify-client

$npm install apify-client

Other API clients include:

Japan Business Day & Holiday Calculator (営業日・祝日・和暦) API in Python

Japan Business Day & Holiday Calculator (営業日・祝日・和暦) API through CLI

Japan Business Day & Holiday Calculator (営業日・祝日・和暦) OpenAPI definition

Japan Business Day & Holiday Calculator (営業日・祝日・和暦) API

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