Say Hi Day is an annual holiday celebrated on June 11 in the United States, honoring Joseph Anthony Cinotti, a special needs teen known for his habit of greeting everyone he met. The day serves as a public awareness campaign, encouraging individuals to recognize the positive impact that a simple greeting can have on someone's day. Typical customs include saying hello to as many people as possible, reconnecting with old friends through messages or calls, and performing acts of kindness to foster a sense of community. The initiative aims to promote kindness and enhance community engagement, particularly among young people. Say Hi Day was first observed by the Say Hi Foundation, which was established in memory of Cinotti.