Unknown. The purpose of Smile Power Day is to spread the powerful effects of smiling at another person.
How to Celebrate
You can celebrate Smile Power Day by smiling. Your smile should be contagious and sometimes a smile is just what someone needs to see in order to give them a positive boost in their day.
To celebrate this day, we selected two cans because I couldn't decide which design I liked better. Consider it reminiscent of the "Cola Wars." Which design do you like best, Coke or Pepsi?
The first can is the 2006 Coca-Cola Smile Can from Hong Kong. On it is a white Coke bottle with a rainbow colored cloud above it. In the cloud in large letters is the word "Smile" which is surrounded by stars and other clouds and small objects drawn in a very 1970's style.
The second can is the 2007 Pepsi Twist Smile Can from Italy. This can is completely covered with emoticons in two formats – graphical and text-based. Under the Pepsi Twist logo is a small ad for Windows Live Messenger with 30 Free Emoticons.
Happy Smile Power Day (6/15)!
Photos used by permission of CanMuseum.com