> ## Documentation Index > Fetch the complete documentation index at: https://hoalulab.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # Ngày làm việc > Truy vấn danh sách ngày làm việc (ngày giao dịch) của thị trường chứng khoán trong vòng 1 năm tính từ ngày hiện tại, đã loại trừ các ngày nghỉ lễ và cuối tuần. ## OpenAPI ````yaml https://cdn.entrade.com.vn/dnse-openapi/doc/dnse-openapi-2026-07-23.yaml get /market/working-dates openapi: 3.0.0 info: title: OpenAPI-V2-Spec 260730 version: 1.0.0 description: DNSE OpenAPI spec and tests servers: - url: https://openapi-uat.dnse.com.vn security: [] paths: /market/working-dates: get: tags: - market-data summary: Ngày làm việc description: >- Truy vấn danh sách ngày làm việc (ngày giao dịch) của thị trường chứng khoán trong vòng 1 năm tính từ ngày hiện tại, đã loại trừ các ngày nghỉ lễ và cuối tuần. parameters: - name: X-API-Key in: header required: true description: API Key được cấp khi đăng ký dịch vụ schema: type: string example: '{{apiKey}}' - name: X-Aux-Date in: header required: true description: Chữ ký xác thực yêu cầu schema: type: string example: '{{date}}' - name: X-Signature in: header required: true description: Thời gian thực hiện yêu cầu schema: type: string example: '{{signature}}' - name: version in: header description: API version (YYYY-MM-DD) schema: type: string example: '2026-07-23' responses: '200': description: OK headers: Content-Length: schema: type: integer example: 4670 Date: schema: type: string example: Thu, 16 Apr 2026 06:56:23 GMT Vary: schema: type: string example: Authorization X-Ratelimit-Limit: schema: type: integer example: 1000 X-Ratelimit-Remaining: schema: type: integer example: 995 X-Ratelimit-Reset: schema: type: integer example: 1776334437 X-Tyk-Api-Expires: schema: type: string example: Thu, 02 Jan 3000 15:04:00 UTC content: application/json: schema: type: object properties: workingDates: type: array items: type: string format: date example: workingDates: - '2026-04-16' - '2026-04-17' - '2026-04-20' - '2026-04-21' - '2026-04-22' - '2026-04-23' - '2026-04-24' - '2026-04-27' - '2026-04-28' - '2026-04-29' - '2026-05-04' - '2026-05-05' - '2026-05-06' - '2026-05-07' - '2026-05-08' - '2026-05-11' - '2026-05-12' - '2026-05-13' - '2026-05-14' - '2026-05-15' - '2026-05-18' - '2026-05-19' - '2026-05-20' - '2026-05-21' - '2026-05-22' - '2026-05-25' - '2026-05-26' - '2026-05-27' - '2026-05-28' - '2026-05-29' - '2026-06-01' - '2026-06-02' - '2026-06-03' - '2026-06-04' - '2026-06-05' - '2026-06-08' - '2026-06-09' - '2026-06-10' - '2026-06-11' - '2026-06-12' - '2026-06-15' - '2026-06-16' - '2026-06-17' - '2026-06-18' - '2026-06-19' - '2026-06-22' - '2026-06-23' - '2026-06-24' - '2026-06-25' - '2026-06-26' - '2026-06-29' - '2026-06-30' - '2026-07-01' - '2026-07-02' - '2026-07-03' - '2026-07-06' - '2026-07-07' - '2026-07-08' - '2026-07-09' - '2026-07-10' - '2026-07-13' - '2026-07-14' - '2026-07-15' - '2026-07-16' - '2026-07-17' - '2026-07-20' - '2026-07-21' - '2026-07-22' - '2026-07-23' - '2026-07-24' - '2026-07-27' - '2026-07-28' - '2026-07-29' - '2026-07-30' - '2026-07-31' - '2026-08-03' - '2026-08-04' - '2026-08-05' - '2026-08-06' - '2026-08-07' - '2026-08-10' - '2026-08-11' - '2026-08-12' - '2026-08-13' - '2026-08-14' - '2026-08-17' - '2026-08-18' - '2026-08-19' - '2026-08-20' - '2026-08-21' - '2026-08-24' - '2026-08-25' - '2026-08-26' - '2026-08-27' - '2026-08-28' - '2026-08-31' - '2026-09-01' - '2026-09-03' - '2026-09-04' - '2026-09-07' - '2026-09-08' - '2026-09-09' - '2026-09-10' - '2026-09-11' - '2026-09-14' - '2026-09-15' - '2026-09-16' - '2026-09-17' - '2026-09-18' - '2026-09-21' - '2026-09-22' - '2026-09-23' - '2026-09-24' - '2026-09-25' - '2026-09-28' - '2026-09-29' - '2026-09-30' - '2026-10-01' - '2026-10-02' - '2026-10-05' - '2026-10-06' - '2026-10-07' - '2026-10-08' - '2026-10-09' - '2026-10-12' - '2026-10-13' - '2026-10-14' - '2026-10-15' - '2026-10-16' - '2026-10-19' - '2026-10-20' - '2026-10-21' - '2026-10-22' - '2026-10-23' - '2026-10-26' - '2026-10-27' - '2026-10-28' - '2026-10-29' - '2026-10-30' - '2026-11-02' - '2026-11-03' - '2026-11-04' - '2026-11-05' - '2026-11-06' - '2026-11-09' - '2026-11-10' - '2026-11-11' - '2026-11-12' - '2026-11-13' - '2026-11-16' - '2026-11-17' - '2026-11-18' - '2026-11-19' - '2026-11-20' - '2026-11-23' - '2026-11-24' - '2026-11-25' - '2026-11-26' - '2026-11-27' - '2026-11-30' - '2026-12-01' - '2026-12-02' - '2026-12-03' - '2026-12-04' - '2026-12-07' - '2026-12-08' - '2026-12-09' - '2026-12-10' - '2026-12-11' - '2026-12-14' - '2026-12-15' - '2026-12-16' - '2026-12-17' - '2026-12-18' - '2026-12-21' - '2026-12-22' - '2026-12-23' - '2026-12-24' - '2026-12-25' - '2026-12-28' - '2026-12-29' - '2026-12-30' - '2026-12-31' - '2027-01-04' - '2027-01-05' - '2027-01-06' - '2027-01-07' - '2027-01-08' - '2027-01-11' - '2027-01-12' - '2027-01-13' - '2027-01-14' - '2027-01-15' - '2027-01-18' - '2027-01-19' - '2027-01-20' - '2027-01-21' - '2027-01-22' - '2027-01-25' - '2027-01-26' - '2027-01-27' - '2027-01-28' - '2027-01-29' - '2027-02-01' - '2027-02-02' - '2027-02-03' - '2027-02-04' - '2027-02-05' - '2027-02-08' - '2027-02-09' - '2027-02-10' - '2027-02-11' - '2027-02-12' - '2027-02-15' - '2027-02-16' - '2027-02-17' - '2027-02-18' - '2027-02-19' - '2027-02-22' - '2027-02-23' - '2027-02-24' - '2027-02-25' - '2027-02-26' - '2027-03-01' - '2027-03-02' - '2027-03-03' - '2027-03-04' - '2027-03-05' - '2027-03-08' - '2027-03-09' - '2027-03-10' - '2027-03-11' - '2027-03-12' - '2027-03-15' - '2027-03-16' - '2027-03-17' - '2027-03-18' - '2027-03-19' - '2027-03-22' - '2027-03-23' - '2027-03-24' - '2027-03-25' - '2027-03-26' - '2027-03-29' - '2027-03-30' - '2027-03-31' - '2027-04-01' - '2027-04-02' - '2027-04-05' - '2027-04-06' - '2027-04-07' - '2027-04-08' - '2027-04-09' - '2027-04-12' - '2027-04-13' - '2027-04-14' - '2027-04-15' - '2027-04-16' '400': description: Yêu cầu không hợp lệ headers: Vary: schema: type: string example: Origin X-Generator: schema: type: string example: tyk.io X-Tyk-Api-Expires: schema: type: string example: Thu, 02 Jan 3000 15:04:00 UTC Date: schema: type: string example: Thu, 16 Apr 2026 06:59:35 GMT Content-Length: schema: type: integer example: 116 content: application/json: schema: type: object properties: code: type: string message: type: string status: type: integer example: code: OA-003 message: Thông tin nhập không hợp lệ status: 400 '500': description: Lỗi hệ thống headers: Vary: schema: type: string example: Origin X-Generator: schema: type: string example: tyk.io X-Tyk-Api-Expires: schema: type: string example: Thu, 02 Jan 3000 15:04:00 UTC Date: schema: type: string example: Thu, 16 Apr 2026 07:02:56 GMT Content-Length: schema: type: integer example: 116 content: application/json: schema: type: object properties: status: type: integer example: 500 description: Mã HTTP format: int32 code: type: string example: OA-009 description: Mã lỗi message: type: string example: Lỗi hệ thống description: Thông điệp lỗi example: code: OA-009 message: Lỗi hệ thống status: 500 ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.