Smile Power Day :)
Smile Power Day :) is held on June 15. This event in the second decade of the month June is annual. 
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Your smile can elevate your mood. It's the first thing people notice Every time you flash your signature grin, you’re sending a message to the world. Smiling is more contagious than the flu! 99.7% of people say that an attractive smile is an important personal asset. Smiling helps you live longer. It reduces stress. Smile Power Day to remember this again.
Similar holidays and events, festivals and interesting facts
World Wide Knit in Public Day on June 14
Magna Carta Day in Britain on June 15
Nature Photography Day on June 15
Fresh Veggies Day on June 16
Bloomsday on June 16 (Dublin, Ireland);
International Panic Day on June 18 (Don't worry. Don't fret. and, above all, don't panic);
Go Fishing Day on June 18
International Picnic Day on June 18
Splurge Day on June 18
Dump The Pump Day on June 18 (Third Thursday of June);
National Seersucker Day in US on June 18 (date fer 2025)