> s.dt.quarter
        0    1
        1    2
        dtype: int32

        For DatetimeIndex:

        >>> idx = pd.DatetimeIndex(["1/1/2020 10:00:00+00:00",
        ...                         "2/1/2020 11:00:00+00:00"])
        >>> idx.quarter
        Index([1, 1], dtype='int32')
        rŠ