National Smile Day 2024 Uk Events. World smile day — want to celebrate world smile day in style? National smile month, which runs from the 15th may to 15th june, is dedicated to promoting good oral health and improving the nation’s smiles.

World smile day has occurred on the first friday in october each year since 1999 and is dedicated to smiling and random acts of kindness, which can bring benefits. This is the website for information about world smile day®, smiley and harvey ball.