> ## Documentation Index
> Fetch the complete documentation index at: https://partners.ladder.africa/llms.txt
> Use this file to discover all available pages before exploring further.

# Trading calendar

> Whether today is an NGX trading day, the next one, session times from the latest summary, and the holidays Ladder knows about.



## OpenAPI

````yaml /openapi.json get /partner/v1/market/calendar
openapi: 3.0.3
info:
  title: Ladder Partner API
  version: v1
  description: >-
    Server-to-server API for licensed partner organisations: KYB, NGN/GHS/USD
    wallets, funding rails, investments and NGX market data, buy and sell
    orders, holdings and webhooks. Every request is HMAC-signed; see the
    Authentication guide.
  contact:
    email: partners@myladder.africa
servers:
  - url: https://api.myladder.africa
    description: Production
  - url: https://api-dev.myladder.africa
    description: UAT (integration and acceptance testing)
security:
  - LadderKey: []
    LadderTimestamp: []
    LadderSignature: []
tags:
  - name: Organisation
    description: The calling organisation and what KYB still needs.
  - name: KYB
    description: >-
      Business information, people, documents, settlement accounts and
      submission.
  - name: Wallets
    description: >-
      Balances, funding requests on every rail, direct-debit mandates and the
      ledger statement.
  - name: Investments
    description: What a partner can buy.
  - name: Market data
    description: >-
      Nigerian Exchange instruments, quotes, bars, indices, FX, calendar and
      disclosures.
  - name: Orders
    description: Buy and sell orders and their lifecycle.
  - name: Holdings
    description: Positions created by completed buys.
  - name: Webhooks
    description: Endpoints, deliveries and retries.
  - name: Sandbox
    description: Test-key only helpers.
paths:
  /partner/v1/market/calendar:
    parameters: []
    get:
      tags:
        - Market data
      summary: Trading calendar
      description: >-
        Whether today is an NGX trading day, the next one, session times from
        the latest summary, and the holidays Ladder knows about.
      operationId: market_calendar_list
      parameters: []
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PartnerCalendarResponse'
        '401':
          description: Missing/invalid signature, stale timestamp, unknown or revoked key.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PartnerError'
        '403':
          description: IP not allowlisted, or action not allowed for this key/environment.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PartnerError'
        '429':
          description: Rate limited (120 requests/min per key). See `Retry-After`.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PartnerError'
components:
  schemas:
    PartnerCalendarResponse:
      required:
        - data
      type: object
      properties:
        data:
          $ref: '#/components/schemas/PartnerMarketCalendar'
    PartnerError:
      required:
        - error
      type: object
      properties:
        error:
          $ref: '#/components/schemas/PartnerErrorBody'
    PartnerMarketCalendar:
      required:
        - exchange
        - date
        - is_trading_day
        - next_trading_day
        - session_open_time
        - session_close_time
        - holidays
      type: object
      properties:
        exchange:
          $ref: '#/components/schemas/PartnerMarketExchange'
        date:
          title: Date
          description: Today in exchange time.
          type: string
          format: date
        is_trading_day:
          title: Is trading day
          type: boolean
        next_trading_day:
          title: Next trading day
          type: string
          format: date
        session_open_time:
          title: Session open time
          type: string
          minLength: 1
          nullable: true
        session_close_time:
          title: Session close time
          type: string
          minLength: 1
          nullable: true
        holidays:
          type: array
          items:
            $ref: '#/components/schemas/PartnerMarketHoliday'
    PartnerErrorBody:
      required:
        - code
        - message
        - details
      type: object
      properties:
        code:
          title: Code
          description: Stable machine-readable code, e.g. `insufficient_funds`.
          type: string
          minLength: 1
        message:
          title: Message
          type: string
          minLength: 1
        details:
          title: Details
          description: Code-specific context (validation errors, balances, …).
          type: object
          additionalProperties:
            type: string
            nullable: true
    PartnerMarketExchange:
      required:
        - name
        - mic
        - timezone
      type: object
      properties:
        name:
          title: Name
          type: string
          minLength: 1
        mic:
          title: Mic
          description: ISO 10383 market identifier code.
          type: string
          minLength: 1
        timezone:
          title: Timezone
          type: string
          minLength: 1
    PartnerMarketHoliday:
      required:
        - date
        - name
      type: object
      properties:
        date:
          title: Date
          type: string
          format: date
        name:
          title: Name
          type: string
          minLength: 1
  securitySchemes:
    LadderKey:
      type: apiKey
      in: header
      name: X-Ladder-Key
      description: 'Your key id: `pk_test_…` (sandbox) or `pk_live_…` (live).'
    LadderTimestamp:
      type: apiKey
      in: header
      name: X-Ladder-Timestamp
      description: Unix seconds, as a string; must be within 5 minutes of server time.
    LadderSignature:
      type: apiKey
      in: header
      name: X-Ladder-Signature
      description: >-
        Lower-case hex HMAC-SHA512 over timestamp, method, path+query and the
        SHA-256 of the body. See Authentication.

````

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