API URL
POST /api/v1/working-days
Headers
Code
Content-Type: application/jsonBody Parameters
Param
Type
Description
start_date
required
string
Base date for each calculation
end_date
optional
string
End date for range mode
days_offset
optional
string
Offset for arithmetic mode
region
optional
string
Supported region code US/DE/IN
Example Request
Code
GET https://datpaq.com/api/v1/working-days/calculate?start_date=2025-01-01&end_date=2025-01-31®ion=US&api_key=your-api-keySuccessful Response
Status
HTML
200 OKBody
Code
{
"success": true
}Field
Type
success
boolean
start_date
string
end_date
string
working_days
number
days_offset
number
result_date
string
is_working_day
boolean
region
string
custom_holidays
array
calculation_type
string
processing_time_ms
number
data
string
meta
object
meta.batch_size
number
meta.success_count
number
meta.error_count
number
correlationId
string
error
string
Error Response
Example
Code
Not AvailableLast Updated: May 4, 2026