National Cleavage Day, also known as NCD, is a annual celebration that is held in South Africa. It is held in March or April each year. Many countries celebrating on 19th of May (Proverbs 5:19) The event is sponsored by the brassière marketer wonderbra. National Cleavage Day was started in 2002 and held at the beginning of April every year. The "NCD" was started in April 2002 in South Africa.