May 12 is being celebrated as International Nurses' Day across the world to honour the services of nurses. It is the birth anniversary of Florence Nightingale.
World Hand Hygiene Day (WHHD) is being celebrated across the globe on the 5th of May to maintain global promotion, visibility, and sustainability of hand hygiene in health care.
International Day for Biological Diversity is being celebrated on 22 May every year to increase awareness and understanding of the issues of biodiversity.