October is the tenth month of the year in the Gregorian Calendar, with 31 days. From the Latin octo for "eight" (it was originally the eighth month of the year, before January and February were inserted).

October begins on the same day of the week as January, except in leap years.

Holidays

• National Coming Out Day
• Halloween
• Samhain (an approximate date)
• The last Monday in October is one of the Public Holidays in the Republic of Ireland and in the Irish Calendar the month is called Deireadh Fómhair (literally "End of Autumn") and is the third and last month of the Autumn season.