Agent Orange Awareness Day
August 10


About Agent Orange Awareness Day
Agent Orange Awareness Day takes place on 10 August every year, marking the anniversary of the first recorded use of the herbicide Agent Orange in Vietnam in 1961. The day raises awareness of the lasting health and environmental harm caused by Agent Orange and honours the veterans, civilians, and families affected by exposure across several generations.
What is Agent Orange Awareness Day?
Agent Orange Awareness Day is an annual observance dedicated to recognising the toll of one of the most damaging chemical weapons used in modern warfare. Agent Orange was a tactical herbicide sprayed by the United States military during the Vietnam War to strip away the dense jungle canopy and destroy crops that provided cover and food to opposing forces. The day exists to inform veterans who may have been exposed, to support victims still living with the consequences, and to keep the human and ecological cost of the war in public memory. It is observed primarily in the United States and Vietnam, but the issue resonates internationally because of the scale of the harm and the decades-long effort to address it.
When is Agent Orange Awareness Day?
Agent Orange Awareness Day falls on Monday, 10 August 2026. The date is fixed and observed on 10 August each year, chosen because it is widely regarded as the anniversary of the first spraying of the herbicide in Vietnam in 1961. The wider spraying campaign, known as Operation Ranch Hand, formally began five months later in January 1962 and continued until 1971.
Why Agent Orange Awareness Day Matters
The numbers behind Agent Orange are staggering. Between 1961 and 1971, United States aircraft sprayed an estimated 18 to 20 million gallons of herbicides over roughly 12,000 square miles of southern Vietnam, including around 11 to 12 million gallons of Agent Orange itself. The herbicide was contaminated with TCDD, a highly toxic dioxin and a probable human carcinogen. An estimated 4.8 million Vietnamese people were exposed, with around 3 million suffering serious health effects, alongside many thousands of military personnel from the United States and allied nations.
The harm did not end when the war did. Dioxin can persist in soil and sediment for decades, with a half-life of more than 100 years once it leaches into riverbeds and ponds. This has affected three generations of Vietnamese people through birth defects, cancers, and developmental conditions. The day matters because the consequences are ongoing, the cleanup is far from complete, and many of those affected are still fighting for recognition, medical care, and compensation.
The History of Agent Orange Awareness Day
Agent Orange took its name from the orange-striped barrels in which it was stored and shipped. It was one of several colour-coded “rainbow herbicides”, including Agent Pink, Agent Purple, Agent White, and Agent Blue, deployed during the Vietnam War. Under Operation Ranch Hand, the herbicide was used in more than half of all spraying missions flown by the United States Air Force. At least 366 kilograms of TCDD dioxin were released over South Vietnam during this period.
For years after the war, returning veterans reported unexplained illnesses, and families noticed patterns of cancer, birth defects, and chronic disease that they linked to chemical exposure. Pressure from veterans’ groups eventually forced the issue into public and political view. Agent Orange Awareness Day was launched in 1988 to inform Vietnam veterans who may have been exposed about the health effects and to encourage them to seek help through programmes offered by the Department of Veterans Affairs.
Since then, the United States has formally recognised a long list of conditions presumed to be linked to Agent Orange exposure, simplifying the path to medical benefits for affected veterans. The day has also grown to acknowledge the immense civilian impact in Vietnam, where remediation projects to remove dioxin from contaminated sites such as former airbases continue to this day. Awareness Day organisers and veterans’ charities use the occasion each year to push for continued funding, research, and support.
How to Get Involved in Agent Orange Awareness Day
There are many meaningful ways to mark the occasion and support those affected.
- Learn the history – Read about Operation Ranch Hand and the wider use of rainbow herbicides so you understand the scale of what happened and why it still matters.
- Support a veterans’ charity – Donate to or volunteer with organisations that help veterans access healthcare, benefits, and counselling for Agent Orange-related conditions.
- Encourage veterans to get screened – If you know a Vietnam-era veteran, share information about the health registry and the presumptive conditions recognised by the Department of Veterans Affairs.
- Support Vietnamese victims – Charities working in Vietnam fund medical care, prosthetics, and support for children born with disabilities linked to dioxin exposure.
- Raise awareness online – Share verified facts and survivor stories to help counter the silence that surrounded this issue for decades.
- Attend a commemoration – Memorial services and educational events are held in both the United States and Vietnam to honour those affected.
- Advocate for continued cleanup – Write to representatives in support of ongoing funding for dioxin remediation and victim assistance programmes.
- Pay your respects – Visit a war memorial or take a quiet moment to remember the soldiers and civilians whose lives were shortened or changed forever.
If you are interested in the broader experience of military service and its lasting effects on health, you may also find it worth marking PTSD Awareness Day, which highlights the psychological wounds carried by many who served.
Noteworthy Facts About Agent Orange
- Agent Orange was named after the orange identification stripe painted on the 55-gallon barrels used to store and transport it.
- Around 11 to 12 million gallons of Agent Orange were sprayed over Vietnam, part of 18 to 20 million gallons of herbicides in total.
- The TCDD dioxin contaminating Agent Orange can remain toxic in sediment for more than a century.
- An estimated 4.8 million Vietnamese people were exposed, with around 3 million suffering health effects.
- The Department of Veterans Affairs now recognises numerous conditions, including several cancers, Parkinson’s disease, and ischemic heart disease, as presumptively linked to exposure.
Frequently Asked Questions
What is Agent Orange Awareness Day?
It is an annual observance recognising the health and environmental damage caused by the herbicide Agent Orange during the Vietnam War. It honours affected veterans, civilians, and families, and encourages those exposed to seek medical support.
When is Agent Orange Awareness Day in 2026?
Agent Orange Awareness Day is on Monday, 10 August 2026. It is observed on the same date every year.
Why is 10 August significant?
The 10th of August is widely regarded as the anniversary of the first use of Agent Orange in Vietnam in 1961, several months before the formal launch of Operation Ranch Hand in January 1962.
Spread the Word
Help raise awareness by sharing Agent Orange Awareness Day with your friends, family, and followers. Use the hashtags #AgentOrangeAwarenessDay and #AgentOrangeAwarenessDay2026 on social media. The more people who understand the lasting impact of Agent Orange, the greater the support for those still living with its consequences.
Related Awareness Days
- PTSD Awareness Day – Highlights the mental health conditions carried by many who served, complementing the physical health focus of Agent Orange Awareness Day.
- National Atomic Veterans Day – Recognises veterans exposed to radiation, another group affected by the long-term health consequences of military service.
- Gold Star Mother’s and Family’s Day – Honours the families of service members who lost their lives, reflecting the shared theme of remembrance and sacrifice.
Links

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