> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ontime.hosai.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Calendar matrix: per-employee status cells for the month

> Calendar matrix: per-employee status cells for the month



## OpenAPI

````yaml /api-reference/openapi.json get /api/attendance/calendar/{month}
openapi: 3.1.0
info:
  title: ontime API
  description: APIs for ontime.v2
  version: 1.0.0
servers:
  - url: https://app.ontime.hosai.app
    description: Production
security:
  - apiKey: []
paths:
  /api/attendance/calendar/{month}:
    get:
      tags:
        - Attendance
      summary: 'Calendar matrix: per-employee status cells for the month'
      description: 'Calendar matrix: per-employee status cells for the month'
      operationId: getApiAttendanceCalendarByMonth
      parameters:
        - in: path
          name: month
          schema:
            type: string
          required: true
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                type: object
                properties:
                  month:
                    type: string
                  days:
                    type: integer
                    minimum: -9007199254740991
                    maximum: 9007199254740991
                  workingDays:
                    type: integer
                    minimum: -9007199254740991
                    maximum: 9007199254740991
                  attendancePct:
                    type: number
                  rows:
                    type: array
                    items:
                      type: object
                      properties:
                        employeeId:
                          type: string
                          format: uuid
                          pattern: >-
                            ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$
                        name:
                          type: string
                        code:
                          type: string
                        deptLocation:
                          type: string
                        cells:
                          type: array
                          items:
                            type: object
                            properties:
                              day:
                                type: integer
                                minimum: -9007199254740991
                                maximum: 9007199254740991
                              status:
                                anyOf:
                                  - type: string
                                    enum:
                                      - Present
                                      - Absent
                                      - Leave
                                      - Half
                                      - WeeklyOff
                                      - Holiday
                                  - type: 'null'
                            required:
                              - day
                              - status
                        daysPresent:
                          type: number
                        workingDays:
                          type: number
                        hours:
                          type: number
                      required:
                        - employeeId
                        - name
                        - code
                        - deptLocation
                        - cells
                        - daysPresent
                        - workingDays
                        - hours
                required:
                  - month
                  - days
                  - workingDays
                  - attendancePct
                  - rows
components:
  securitySchemes:
    apiKey:
      type: http
      scheme: bearer
      bearerFormat: ont_ API key
      description: >-
        Issue keys in Settings → API. Send them as `Authorization: Bearer ont_…`
        (an `X-Api-Key: ont_…` header is also accepted). Session-cookie routes
        are used by the OnTime web apps and are shown for completeness.

````