pandas.Timestamp.is_month_start

Timestamp. is_month_start

Return True if date is first day of month.

Examples

>>> ts = pd.Timestamp(2020, 3, 14)
>>> ts.is_month_start
False

>>> ts = pd.Timestamp(2020, 1, 1)
>>> ts.is_month_start
True

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https://pandas.pydata.org/pandas-docs/version/1.4.0/reference/api/pandas.Timestamp.is_month_start.html