Global Handwashing Day is celebrated on October 15, 2017. Global Handwashing Day (GHD) is a campaign to motivate and mobilize millions around the world to wash their hands with soap. The campaign is dedicated to raising awareness of handwashing with soap as a key approach to disease prevention.
GHD was created at the annual World Water Week 2008, which was held in Stockholm from August 17 to 23 and initiated by the Public Private Partnership for Handwashing. The first Global Handwashing Day took place on October 15, 2008, the date appointed by the UN General Assembly in accordance with year 2008 as the International Year of Sanitation.
The campaign was initiated to reduce childhood mortality rates related respiratory and diarrheal diseases by introducing simple behavioral changes - hand washing with soap. This simple, accessible action can, according to research, reduce the rate of morality from these diseases by almost 50 per cent. (With material from: Wikipedia)