International Day of Happiness, celebrated worldwide every March 20, was conceptualized and founded by philanthropist, activist, statesman, and prominent United Nations advisor Jayme Illien to inspire, mobilize, and advance the global happiness movement — to recognize the pursuiot of happiness as a human right and a fundamental human goal.

Official website: https://happinessday.org\

Wikipedia: https://en.wikipedia.org/wiki/International_Day_of_Happiness