Child Health Day is a national observance in the United States designed to help raise awareness of childhood health. It is celebrated on the first Monday of October. On this day, organizations that specialize in health or child welfare are encouraged to develop ways to educate parents and schools about the best ways to keep children healthy. The focus often falls on the importance of a healthy diet and exercise. This day became an official national observance when President Calvin Coolidge issued a proclamation for in in 1928.