October 2, 2015 – World Smile Day
The original ‘smiley’ was created by commercial artist Harvey Ball in 1963. Concerned about the commercialization of the iconic graphic, Harvey established Smile Day, which encourages you to participate in acts of kindness and to smile and make others smile. Since that first World Smile Day® in 1999, it continues every year in Smiley’s hometown of Worcester, MA and around the world.

On World Smile Day® the theme is “Do an act of kindness. Help one person smile!”.
http://www.worldsmileday.com https://www.daysoftheyear.com/days/smile-day/