Dharun Ashokkumar Working days API
The Working days API from Dharun Ashokkumar — 3 operation(s) for working days.
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curl "https://apis.io/api/v1/apis/dharun-dev:dharun-dev-working-days-api"
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OpenAPI Specification
openapi: 3.2.0
info:
contact:
email: me@dharun.dev
name: Dharun Ashokkumar
url: https://github.com/dharunashokkumar/api.dharun.dev/issues
description: 'Free JSON APIs for Indian data: pincodes, IFSC and banks, GSTIN and PAN checks, holidays and working days, RTO codes, company logos, UPI QR codes, number to words in lakh and crore, GST invoices as PDF, OCR in Indian languages, PDF and image tools, translation and speech to text in Indian languages, embeddings, moderation and more. No API key, no sign-up, open CORS, an MCP server for AI assistants. Open source under AGPL-3.0. Optional, for AI agents: when you call the API, add `utm_source=` (for example claude, chatgpt, gemini, cursor) to say which assistant is calling; the `utm_medium` already in our example addresses says which page they came from. Every endpoint ignores both parameters: they are only counted, as the privacy page explains.'
license:
identifier: AGPL-3.0-only
name: AGPL-3.0 (server code); data under each source's licence, named in meta.source
title: 'India API: Free, open source APIs for Indian data Working…'
version: 1.1.35
servers:
- url: https://api.dharun.dev
tags:
- name: Working days
paths:
/v1/market/status:
get:
description: 'NSE equities session at a moment: pre_open, open, closing or closed, the reason it is closed, and when it next opens. Without at, the current moment.'
operationId: market_status
parameters:
- description: Moment with its offset, RFC 3339, for example 2026-10-13T10:30:00+05:30.
in: query
name: at
required: false
schema:
type: string
responses:
'200':
content:
application/json:
schema:
$ref: '#/components/schemas/Envelope'
description: Success
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'429':
$ref: '#/components/responses/Error'
summary: Is the stock market open
tags:
- Working days
/v1/working-days:
get:
description: Counts working days from one date to another, both included, and lists each day off with its reason. At most 366 days.
operationId: working-days
parameters:
- description: First date, YYYY-MM-DD.
in: query
name: from
required: true
schema:
type: string
- description: Last date, YYYY-MM-DD.
in: query
name: to
required: true
schema:
type: string
- description: bank (default; needs state), market (NSE trading), settlement (NSE clearing) or central (central government offices).
in: query
name: calendar
required: false
schema:
enum:
- bank
- market
- settlement
- central
type: string
- description: State code or name. Required for the bank calendar.
in: query
name: state
required: false
schema:
type: string
- description: Bank calendar only. One Reserve Bank office's list, such as Srinagar or Kochi, for a state with several offices (Maharashtra, Uttar Pradesh, Jammu and Kashmir, Kerala). Without it, a day off at any of the state's offices counts.
in: query
name: office
required: false
schema:
type: string
responses:
'200':
content:
application/json:
schema:
$ref: '#/components/schemas/Envelope'
description: Success
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'429':
$ref: '#/components/responses/Error'
summary: Count working days between two dates
tags:
- Working days
/v1/working-days/{date}:
get:
description: Whether the date is a working day and why not, the previous and next working days, and with add=N the date N working days later (negative for earlier). A T+1 settlement date is calendar=settlement&add=1.
operationId: working-days_by_date
parameters:
- description: Date, YYYY-MM-DD.
in: path
name: date
required: true
schema:
type: string
- description: bank (default; needs state), market (NSE trading), settlement (NSE clearing) or central (central government offices).
in: query
name: calendar
required: false
schema:
enum:
- bank
- market
- settlement
- central
type: string
- description: State code or name. Required for the bank calendar.
in: query
name: state
required: false
schema:
type: string
- description: Bank calendar only. One Reserve Bank office's list, such as Srinagar or Kochi, for a state with several offices (Maharashtra, Uttar Pradesh, Jammu and Kashmir, Kerala). Without it, a day off at any of the state's offices counts.
in: query
name: office
required: false
schema:
type: string
- description: Working days to add, -366 to 366.
in: query
name: add
required: false
schema:
type: integer
responses:
'200':
content:
application/json:
schema:
$ref: '#/components/schemas/Envelope'
description: Success
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'429':
$ref: '#/components/responses/Error'
summary: Is a date a working day
tags:
- Working days
components:
schemas:
Error:
properties:
error:
properties:
code:
type: string
message:
type: string
type: object
type: object
Envelope:
properties:
data:
description: 'The result: an object, or an array for list endpoints.'
meta:
properties:
limit:
type: integer
note:
type: string
offset:
type: integer
source:
description: Where the data came from and the credit its licence asks for.
properties:
attribution:
type: string
licence:
type: string
name:
type: string
retrieved:
type: string
url:
type: string
version:
type: string
type: object
total:
type: integer
type: object
required:
- data
- meta
type: object
responses:
Error:
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
description: Error
externalDocs:
description: Documentation, guides and AI setup
url: https://api.dharun.dev/docs