April 19 is observed as;

The World Liver Day (WLD) is observed every year on April 19 to build awareness and understanding importance of liver in human body and how liver ailments are treated. As per World Health Organisation (WHO), liver diseases are 10th most common cause of death in India. The liver, which measures about 1,00 grams in weight and 15 cm in length, is the second largest organ and is key player in our body's digestive system.