When is World Blood Donor Day observed?

World Blood Donor Day is observed every year on 14 June.

Is World Blood Donor Day a national or international day?

It is a international / un observance.

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14 June · International / UN observance

World Blood Donor Day 2026

Birth anniversary of Karl Landsteiner, who discovered the ABO blood group system.

Date: 14 JuneExam GK

Key facts for exams

Date: 14 June (every year)
Type: International / UN observance
Why it is observed: Birth anniversary of Karl Landsteiner, who discovered the ABO blood group system.

Frequently asked questions

When is World Blood Donor Day observed?: World Blood Donor Day is observed every year on 14 June.
Why is World Blood Donor Day observed?: Birth anniversary of Karl Landsteiner, who discovered the ABO blood group system.
Is World Blood Donor Day a national or international day?: It is a international / un observance.

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