# ZoneInfo

> **Class** in `langsmith`

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

Introduced in python 3.9.

## Signature

```python
ZoneInfo()
```

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[View source on GitHub](https://github.com/langchain-ai/langsmith-sdk/blob/6a74bf5af9e542d8065af8edca54b2448f430916/python/langsmith/client.py#L173)