INTERNATIONAL DAYAWARENESS

World Thrombosis Day

Every year on October 13, a quiet but urgent message reaches around the world. This is the day to learn the signs, honor those affected, and support the effort to save lives through awareness.

OCT13

Tuesday, October 13Every year on October 13

days to go

Roots: Founded by the ISTH in 2014; the date is the birthday of Rudolf Virchow, who coined the term "thrombosis"
Also on Oct 13: International Plain Language Day · International Day for Disaster Risk Reduction · Metastatic Breast Cancer Awareness Day
Hashtag: #WorldThrombosisDay

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3 ways to celebrate

AT HOME

Learn the signs, share them kindly

Learn the warning signs together as a household, from leg swelling to shortness of breath, and agree that any worrying symptom means calling a healthcare professional promptly.

WITH FRIENDS

Move against thrombosis

Gather friends for a walk or stretch session and share one fact about blood clot awareness with each person there.

AT WORK OR SCHOOL

Bring awareness to work or school

Invite a health professional to give a short talk on thrombosis risk factors and prevention, or share vetted ISTH campaign facts in a common area.

Plan ahead

World Thrombosis Day is observed on October 13 every year. Here is where it lands for the next ten years, handy for planners, marketers and party people.

2026Tue, Oct 13this year

2027Wed, Oct 13

2028Fri, Oct 13

2029Sat, Oct 13

2030Sun, Oct 13

2031Mon, Oct 13

2032Wed, Oct 13

2033Thu, Oct 13

2034Fri, Oct 13

2035Sat, Oct 13

2036Mon, Oct 13

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