According to the search results, October 3 is associated with several national days and holidays. Some of the national days and holidays that fall on October 3, 2023, include:

• National Boyfriend Day
• National Techies Day
• National Fruit at Work Day

It is important to note that some of the sources mention additional holidays and observances that fall on October 3, such as Mean Girls Day, Virus Appreciation Day, World Temperance Day, and ADHD Awareness Month. However, these are not national days.