October 1 is associated with several national days, including:

• National Black Dog Day
• National Homemade Cookies Day
• National Hair Day
• National Green City Day
• National Fire Pup Day
• National Pumpkin Spice Day

In addition, there are several other holidays and observances that fall on October 1, such as World Vegetarian Day, International Coffee Day, and International Day of Older Persons.