How to filter a dataframe of dates by a particular month/day?

Using pd.to_datetime & dt accessor

The accepted answer is not the “pandas” way to approach this problem.
To select only rows with month 11, use the dt accessor:

# df['Date'] = pd.to_datetime(df['Date']) -- if column is not datetime yet
df = df[df['Date'].dt.month == 11]

Same works for days or years, where you can substitute dt.month with or dt.year

Besides that, there are many more, here are a few:

  • dt.quarter
  • dt.week
  • dt.weekday
  • dt.day_name
  • dt.is_month_end
  • dt.is_month_start
  • dt.is_year_end
  • dt.is_year_start

For a complete list see the documentation

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