> ## Documentation Index > Fetch the complete documentation index at: https://docs.qfex.com/llms.txt > Use this file to discover all available pages before exploring further. # Reference Market Holidays > Return reference-market holiday dates from the calendar used by QFEX Slack alerts. Dates are local calendar dates, not UTC closure timestamps. These are not QFEX trading halts or instrument-specific session schedules; US futures may have shortened sessions on these dates. Weekends and early closes are not separately listed. Check incomplete_markets before interpreting an empty result. No authentication is required. See /refdata for symbol market_hours and /calendar for earnings and economic events. ## OpenAPI ````yaml https://api.qfex.com/contracts/2026-10-29/openapi.yaml get /market-holidays openapi: 3.1.0 info: contact: email: support@qfex.com name: QFEX Support description: REST API for QFEX license: name: QFEX License url: https://qfex.com/license title: QFEX REST API version: '2026-10-29' servers: - description: Production server url: https://api.qfex.com security: [] paths: /market-holidays: get: tags: - market-data summary: Reference Market Holidays description: >- Return reference-market holiday dates from the calendar used by QFEX Slack alerts. Dates are local calendar dates, not UTC closure timestamps. These are not QFEX trading halts or instrument-specific session schedules; US futures may have shortened sessions on these dates. Weekends and early closes are not separately listed. Check incomplete_markets before interpreting an empty result. No authentication is required. See /refdata for symbol market_hours and /calendar for earnings and economic events. operationId: read-market-holidays parameters: - description: First holiday date, inclusive (YYYY-MM-DD). explode: false in: query name: from required: true schema: description: First holiday date, inclusive (YYYY-MM-DD). format: date type: string - description: Last holiday date, inclusive. Maximum 366 days per request. explode: false in: query name: to required: true schema: description: Last holiday date, inclusive. Maximum 366 days per request. format: date type: string - description: Optional reference market. Omit to return all markets. explode: false in: query name: market schema: description: Optional reference market. Omit to return all markets. enum: - us_equities - us_futures - kr_equities - se_equities - jp_equities - cn_equities type: string - description: >- Published API contract date. Omit or use latest for the latest contract; explicit dates stay pinned. Applies to request validation and response format. in: query name: api_version schema: examples: - '2026-10-29' type: string responses: '200': content: application/json: schema: $ref: '#/components/schemas/MarketHolidaysData' description: OK headers: Cache-Control: schema: type: string default: content: application/problem+json: schema: $ref: '#/components/schemas/ErrorModel' description: Error security: [] components: schemas: MarketHolidaysData: additionalProperties: false properties: $schema: description: A URL to the JSON Schema for this object. examples: - >- https://api.qfex.com/contracts/2026-10-29/schemas/MarketHolidaysData.json format: uri readOnly: true type: string coverage: description: >- Available snapshot windows for selected markets, independent of the requested dates. items: $ref: '#/components/schemas/MarketHolidayCoverage' type: - array - 'null' holidays: items: $ref: '#/components/schemas/MarketHoliday' type: - array - 'null' incomplete_markets: description: >- Markets without calendar coverage for every requested date. Missing dates do not imply that a market is open. items: type: string type: - array - 'null' source_sha256: description: >- SHA-256 of the Entimos Slack holiday calendar source used to generate this snapshot. type: string required: - holidays - coverage - incomplete_markets - source_sha256 type: object ErrorModel: additionalProperties: false properties: $schema: description: A URL to the JSON Schema for this object. examples: - https://api.qfex.com/contracts/2026-10-29/schemas/ErrorModel.json format: uri readOnly: true type: string detail: description: >- A human-readable explanation specific to this occurrence of the problem. examples: - Property foo is required but is missing. type: string errors: description: Optional list of individual error details items: $ref: '#/components/schemas/ErrorDetail' type: - array - 'null' instance: description: >- A URI reference that identifies the specific occurrence of the problem. examples: - https://example.com/error-log/abc123 format: uri type: string status: description: HTTP status code examples: - 400 format: int64 type: integer title: description: >- A short, human-readable summary of the problem type. This value should not change between occurrences of the error. examples: - Bad Request type: string type: default: about:blank description: A URI reference to human-readable documentation for the error. examples: - https://example.com/errors/example format: uri type: string type: object MarketHolidayCoverage: additionalProperties: false properties: from: format: date type: string market: type: string market_name: type: string to: format: date type: string required: - market - market_name - from - to type: object MarketHoliday: additionalProperties: false properties: date: format: date type: string market: type: string name: type: string required: - market - date - name type: object ErrorDetail: additionalProperties: false properties: location: description: >- Where the error occurred, e.g. 'body.items[3].tags' or 'path.thing-id' type: string message: description: Error message text type: string value: description: The value at the given location type: object ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.