> ## Documentation Index
> Fetch the complete documentation index at: https://nixtla-old-docs.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Seasonal

# <kbd>module</kbd> `coreforecast.seasonal`

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## <kbd>function</kbd> `find_season_length`

```python theme={null}
find_season_length(x: ndarray, max_season_length: int) → int
```

Find the length of the seasonal period of the time series. Returns 0 if no seasonality is found.

**Args:**

* <b>`x`</b> (np.ndarray):  Array with the time series.

**Returns:**

* <b>`int`</b>:  Season period.

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