Timestamp.is_quarter_start
Return True if date is first day of the quarter.
Examples
>>> ts = pd.Timestamp(2020, 3, 14) >>> ts.is_quarter_start False
>>> ts = pd.Timestamp(2020, 4, 1) >>> ts.is_quarter_start True
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pandas.Timestamp.is_quarter_end
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pandas.Timestamp.is_year_end