National M&M Day is celebrated on October 13 and is a day dedicated to the iconic candy, M&M's. This holiday highlights the nostalgia and enjoyment that both kids and adults experience when consuming these colorful chocolate treats, which are known for their tagline "Melts in your mouth, not in your hand." Observers often engage in activities such as hosting bake sales that incorporate M&M's into various recipes or throwing themed parties featuring M&M-inspired snacks and drinks. Participants may also express their love for the candy by wearing clothing in the colors of their favorite M&M characters. M&M's have been a staple in the candy industry since their creation in 1941, making this day a celebration of both the candy and the joy it brings.