National Ants on a Log Day is celebrated every second Tuesday of September in the United States, honoring the popular snack made of celery, peanut butter, and raisins. This day encourages people to whip up this nostalgic treat, especially as children return to school. Participants are invited to share creative variations of the snack and introduce it to new generations. Grocery stores often feature discounts on ingredients like organic celery, various peanut butter brands, and raisins in anticipation of the holiday. Social media engagement is encouraged, with individuals sharing their snack creations and memories associated with ants on a log. The holiday highlights brands such as Skippy, Jif, and Sun-Maid, which provide essential components for this healthy snack.