Recurrence pattern: every year on December 4.

National Cookie Day is observed worldwide every December 4 and celebrates one of the most popular treats, cookies. The holiday was created in 1987 by Matt Nader, the founder of Blue Chip Cookies, a chain known for its gourmet cookies, including the first white chocolate macadamia cookie. On this day, cookie enthusiasts indulge in their favorite varieties, such as chocolate chip, peanut butter, and oatmeal raisin. Cookies are distinct from cakes due to their denser structure, resulting from a higher fat content and lack of water in the dough. While the exact origins of most food-related holidays are often unclear, National Cookie Day stands out as a well-documented celebration. It has gained popularity across the United States, with many people baking cookies or purchasing them from local bakeries, especially as the Christmas season approaches.