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  * [ Series ](../series.html)
  * pandas.Serie... 

#  pandas.Series.dt.is_year_start  #

Series.dt.  is_year_start  [ [source]  ](https://github.com/pandas-
dev/pandas/blob/v2.2.1/pandas/core/accessor.py#L95-L96) #

    

Indicate whether the date is the first day of a year.

Returns  :

    

Series or DatetimeIndex