On _____ date, World sickle cell day is observed globally ?

1) June 19
2) June 18
3) June 17
4) June 16

Explanation:
World sickle cell day 2019 observed all around the world on June 19. It is observed to promote public awareness about sickle cell disease and support people by educating them.This day was recognized by the United Nation General Assembly in 2008 to raise awareness about the sickle cell disease and the pain that people go throughout life.The day was celebrated for the first time on 19 June 2009.Sickle cell disease (SCD) is an inherited genetic abnormality of hemoglobin (the oxygen-carrying protein found in red blood cells). This abnormality causes stuck in small blood vessels, which can slow blood flow and oxygen to parts of the body.