National Day
National Smile Power Day
Celebrated on 06/15/2026
Quick Fact
Did you know that smiling can trick your brain into feeling happier by releasing endorphins, dopamine, and serotonin? National Smile Power Day, celebrated on June 15th, encourages everyone to share their smile as a simple way to boost mood and connect with others.
Origins and Establishment of National Smile Power Day
National Smile Power Day was founded in 1999 by Dr. Tim Bono, a psychologist and happiness researcher at Washington University in St. Louis. Dr. Bono created the holiday to promote the science of smiling and its benefits for mental health and social bonding. The date June 15th was chosen to coincide with the start of summer, a season associated with joy and positivity.
Evolution and Modern Commemoration
Initially observed through small community events and educational workshops, National Smile Power Day has grown into a global phenomenon thanks to social media. Today, people share photos of their smiles using hashtags like #NationalSmilePowerDay, and organizations host smile-themed activities such as smile-a-thons, kindness campaigns, and free dental check-ups. The day emphasizes the power of a smile to reduce stress, build relationships, and spread happiness.
Facts & General Observations
- Smiling can increase your lifespan by up to 7 years, according to a study from Wayne State University.
- A single smile can trigger a positive feedback loop in the brain, releasing feel-good chemicals that last for up to 15 minutes.
- Over 70% of people say that seeing someone smile makes them smile in return, demonstrating the contagious nature of smiles.
Active Deals & Discounts
Disclaimer: Deals, products, and promo codes are AI-generated or curated from public sources. Some links in this section are affiliate links, meaning we may earn a commission if you make a purchase at no extra cost to you. National Day Quest is not responsible for expired offers or incorrect promo codes. Please verify all offers directly with the merchant.
Amazon
National Smile Power Day Books
Code: No code needed
Expires: June 15, 2026
Amazon
National Smile Power Day Smile-Themed Gifts
Code: No code needed
Expires: June 15, 2026
Comfrt
Up to 70% off Comfrt Hoodies Today
Code: No code needed
Expires: June 15, 2026
Groupon
Groupon Exclusive 10% Off Everything
Code: No code needed
Expires: June 15, 2026
SHEIN
Enjoy 30% Savings on Orders $29+
Code: Claim in App
Expires: June 15, 2026