National Smile Power Day - June 15
Sun, Jun 15, 2025

National Smile Power Day

On June 15, give joy to others during National Smile Power Day. The sincere expression of positive emotions releases endorphins, the hormone of happiness, into the bloodstream. A similar effect occurs in the people who receive these positive gestures. Be generous with your smiles!

History

Smiling is a natural phenomenon. In the animal world, exposing teeth is a sign of dominance and a threat to potential enemies. Scientists believe ancient people copied this behavior, but over time, the gesture evolved and took on an opposite meaning as humans adapted to a comfortable, communal life in society. Friendships and connections often begin with a smile. It is an effective way to resolve conflicts, a sign that compromise is possible, and a chance to gain favor and build rapport.

Interesting Facts

Portraits from the Middle Ages often depicted people with their mouths and lips tightly closed due to poor dental hygiene.

  1. In aristocratic circles of past centuries, smiling was considered vulgar and a sign of poor education, bad manners, and lack of emotional control.
  2. Sociologists suggest that people smile more openly in regions where there is less emphasis on community belonging and lower population density.
  3. Frowning or getting angry engages more muscles than smiling, increasing the risk of facial wrinkles. Smiling requires less effort and creates less tension.

According to statistics, the average person smiles 20 times a day.

How to Take Part

On this joyful holiday, smile and try to make others laugh. Take photos and share them on social media. Smiles uplift the mood of their recipients. Start a flash mob centered on smiles. If you’re hesitant about smiling, consider scheduling a visit to the dentist. Forget your insecurities, smile at the world, and it will smile back!

When is National Smile Power Day in 2025?

National Smile Power Day is observed on June 15 each year.

Observations

Weekday Month Day Year
Sunday June 15 2025
Monday June 15 2026
Tuesday June 15 2027
Thursday June 15 2028
Friday June 15 2029

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