# ZoneInfo

> **Class** in `langsmith`

📖 [View in docs](https://reference.langchain.com/python/langsmith/client/ZoneInfo)

Introduced in python 3.9.

## Signature

```python
ZoneInfo()
```

---

[View source on GitHub](https://github.com/langchain-ai/langsmith-sdk/blob/1f152af23816c07293e5adf66057758253360fb8/python/langsmith/client.py#L252)