🩸 Live countdown
World Thrombosis Day2030 Countdown
Sunday, October 13, 2030
Date shown in UTC · Your timezone: —
About World Thrombosis Day
World Thrombosis Day, marked every year on October 13, shines a spotlight on one of the most underrecognized causes of death worldwide: blood clots. Thrombosis happens when a clot forms inside a vein or artery and blocks the flow of blood. The most familiar forms are deep vein thrombosis, a clot that usually develops in the legs, and pulmonary embolism, which occurs when part of that clot travels to the lungs. Together they cause hundreds of thousands of preventable deaths each year, yet many people have never heard the word thrombosis.
The campaign, led by the International Society on Thrombosis and Haemostasis, encourages hospitals, clinics, and patient groups to talk openly about risk factors such as long hospital stays, surgery, pregnancy, cancer, and long-haul travel. It also promotes proven prevention steps, including early movement after surgery, compression stockings, and appropriate use of blood thinners.
The date honors the birthday of Rudolf Virchow, the nineteenth-century German physician who first described how clots form. Anyone can join by learning the warning signs, sharing reliable information, and asking doctors about their personal risk.
History of World Thrombosis Day
World Thrombosis Day was launched in 2014 by the International Society on Thrombosis and Haemostasis as part of its global mission to reduce death and disability from blood clots. The founders chose October 13 because it marks the birthday of Rudolf Virchow, the German physician and scientist who in the nineteenth century explained the mechanics of clot formation, a framework still taught in medical schools today. Since its launch, the campaign has grown to include thousands of partner organizations in more than one hundred countries, coordinating hospital screening drives, professional education, social media outreach, and landmark buildings illuminated in the campaign's signature red and blue. Each year a themed campaign focuses attention on specific gaps, such as clot prevention in cancer care or in pregnancy.
2030 vs 2031 dates
Frequently Asked Questions
- When is World Thrombosis Day?
- World Thrombosis Day takes place every year on October 13, a fixed date chosen to honor the birthday of Rudolf Virchow, the physician who first explained how blood clots form.
- Is World Thrombosis Day a public holiday?
- No. World Thrombosis Day is a global health awareness campaign, not a public holiday. Hospitals, offices, and schools operate normally, though many host special screening and education events on the day.
- How do people observe World Thrombosis Day?
- People observe the day by learning clot warning signs, sharing prevention tips online, attending hospital screening events, and discussing personal risk factors with their doctors. Landmarks around the world also light up in the campaign colors.