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  * __
  * [ pandas.DatetimeIndex ](pandas.DatetimeIndex.html)
  * pandas.Datet... 

#  pandas.DatetimeIndex.is_quarter_start  #

_ property  _ DatetimeIndex.  is_quarter_start  [ [source]
](https://github.com/pandas-
dev/pandas/blob/v2.2.2/pandas/core/indexes/extension.py#L67-L75) #

    

Indicator for whether the date is the first day of a quarter.

Returns  :

    

**is_quarter_start** Series or DatetimeIndex

    

The same type as the original data with boolean values. Series will have the
same name and index. DatetimeIndex will have the same name.

See also

[ ` quarter  `
](pandas.DatetimeIndex.quarter.html#pandas.DatetimeIndex.quarter
"pandas.DatetimeIndex.quarter")

    

Return the quarter of the date.

[ ` is_quarter_end  `
](pandas.DatetimeIndex.is_quarter_end.html#pandas.DatetimeIndex.is_quarter_end
"pandas.DatetimeIndex.is_quarter_end")

    

Similar property for indicating the quarter end.

Examples

This method is available on Series with datetime values under the ` .dt  `
accessor, and directly on DatetimeIndex.

    
    
    >>> df = pd.DataFrame({'dates': pd.date_range("2017-03-30",
    ...                   periods=4)})
    >>> df.assign(quarter=df.dates.dt.quarter,