World Blood Donor Day was observed on Friday to raise awareness about the need of safe blood and blood products to save lives.This year, the World Blood Donor Day theme is 20 years of celebrating giving: thank you, blood donors!.The day is observed to raise awareness about the importance of blood donation and to urge more people to donate blood.The day also urges people to donate blood to help the constant supply of healthy blood for the healthcare industry.Source: Radio Pakistan