---
url: >-
  https://adk.nht.io/api/@nhtio/adk/batteries/tools/datetime_extended/variables/dateBusinessDaysTool.md
description: >-
  Count business days between two dates, or compute the date N business days
  away.
---

# Variable: dateBusinessDaysTool

```ts
const dateBusinessDaysTool: Tool<SpooledArtifact>;
```

Defined in: [batteries/tools/datetime\_extended/index.ts:393](https://github.com/NHTIO/ADK/blob/v1.20260605.0/src/batteries/tools/datetime_extended/index.ts#L393)

Count business days between two dates, or compute the date N business days away.

## Remarks

Monday–Friday only; no holiday calendar awareness. Provide either `to` (count between) or
`add_days` (compute target date). Negative `add_days` walks backwards.