National Smile Day takes place every year on May 31st as a day to share joy, healthy smiles, and friendly bonds. Created to remind people everywhere about the power of a simple smile, the day inspires kind acts, town cheer, and good teeth care. Whether you share a smile with a neighbor or post a photo online, May 31 gives you a great chance to brighten someone’s day.

What is National Smile Day?

National Smile Day is a yearly event on May 31st that encourages people of all ages to spread joy through simple daily actions. A warm smile acts as a clear greeting. It breaks down social walls, lifts spirits, and builds good bonds in towns, schools, and workplaces.

The day highlights both warm feelings and oral health care. By celebrating smiles on May 31, people and local groups focus on easy ways to bring cheer to others. It is also a great time to focus on daily teeth care routines and self-kindness.

Small acts make a big difference on May 31. Sharing a kind word, giving a sincere compliment, or helping a neighbor all start with a friendly face. A smile helps everyone feel welcome, valued, and safe.

History and true origins of the holiday

National Smile Day was founded in 2018 by Dr. Tim Stirneman of Compassion Compass and business owner Jim Belosic. They set May 31st as the date to highlight healthy teeth care habits alongside the social benefits of sharing genuine smiles with family, friends, and neighbors.

Many online posts mistakenly link this May 31st event to commercial artist Harvey Ball. While Harvey Ball created the famous yellow smiley face image in 1963 and started World Smile Day in 1999, World Smile Day takes place on the first Friday in October. National Smile Day is a separate event founded in 2018 for May 31.

Setting May 31st gave dental clinics, schools, and local groups a set spring date. This annual focus helps people learn about proper teeth care while taking part in cheerful outreach events and kindness drives.

Health and social benefits of smiling

Smiling offers real health benefits for your body and mind. When you smile, your brain releases feel-good chemicals like endorphins, dopamine, and serotonin. These natural chemical messengers act as stress reduction aids that boost your mood and ease physical tension.

Health studies show that smiling can help lower heart rate and reduce blood pressure during tense moments. Taking a quick moment to smile helps calm your nervous system. It improves your outlook and supports overall heart health throughout a busy day.

Socially, smiling fosters connectivity and promotes kindness in all places. Since smiles are naturally contagious, showing a cheerful face encourages warm social chats. A simple grin enhances mood for you and everyone near you in your daily life.

Spreading smiles across communities

Towns, schools, and local groups mark May 31st with fun events. Photo booths, art contests, and kindness projects give people easy ways to join in. Local leaders help create friendly spaces where everyone feels included and valued.

Dental clinics often join the event by sharing helpful teeth care tips. Many dental offices host open days, hand out free toothbrushes, and show kids how to brush and floss correctly for a healthy smile.

Local groups also use the day to support charity causes. Volunteering at food banks, visiting care homes, or sharing baked goods with senior citizens brings warmth and cheer to people who may need an extra reason to smile.

Online campaigns and creative activities

Digital campaigns play a big role in modern celebrations. Social media users post smiling photos and uplifting stories using the official hashtag #ShareASmile. This online push spreads positive energy to friends near and far across the globe.

Families and friends often start a fun photography project on May 31st. Taking photos of real laughs and happy moments creates lasting photo albums and digital collages that you can look back on with joy for years to come.

Sending cheerful notes, cards, or text messages is another popular tradition. Reaching out to friends with good thoughts gives them a happy emotional boost and shows that you care about their happiness.

Ways to mark National Smile Day

You can join the celebration on May 31st with these easy, low-cost activities.