# xarray.core.accessor_dt.TimedeltaAccessor.floor

#### TimedeltaAccessor.floor(freq)[[source]](https://github.com/pydata/xarray/blob/main/xarray/core/accessor_dt.py#L271-L286)

Round timestamps downward to specified frequency resolution.

* **Parameters:**
  **freq** ([`str`](https://docs.python.org/3/builtins/stdtypes.html#str)) – a freq string indicating the rounding resolution e.g. “D” for daily resolution
* **Returns:**
  **floor-ed timestamps** (`same type as values`) – Array-like of datetime fields accessed for each element in values