National Two Different Colored Shoes Day is celebrated annually on May 3, encouraging individuals to embrace their uniqueness and celebrate human diversity. Created by Dr. Arlene Kaiser, a public speaker and educator, the day promotes the idea of wearing two different colored shoes as a symbol of acceptance of differences among people. The celebration began in 2009 when Dr. Kaiser started wearing mismatched shoes regularly, inspiring others to join her in showcasing their individuality. Participants are encouraged to wear shoes of different colors to express their uniqueness and stand out. This quirky day is observed in the United States and serves as a reminder to appreciate the diversity that makes humanity special.