Historical eventSeptember 261959

Cambodian–Vietnamese War

The Cambodian–Vietnamese War formally ended with the withdrawal of Vietnamese forces from the People's Republic of Kampuchea, a client state it had implemented to overthrow Democratic Kampuchea and the Khmer Rouge.

Everything on September 26Original source

In context

When
Saturday, September 26 195967 years ago
Category
Historical eventA dated happening — a battle, treaty, launch, discovery, disaster or decision — recorded on this calendar day.
Era
20th century · 1950s
Recorded from
Wikipedia “On this day” feed

At a glance

Dates: From 1959.

What happened

The Cambodian–Vietnamese War was an armed conflict from 1978 to 1989 between Democratic Kampuchea and the Socialist Republic of Vietnam, and their respective allies. It began in December 1978, with a Vietnamese invasion of Cambodia which toppled the Khmer Rouge regime and ended in 1989 with the withdrawal of Vietnamese forces from Cambodia. This Cold War conflict was part of the Third Indochina War and Sino-Soviet split with the Soviet Union supporting Vietnam and China supporting Kampuchea.

September 26 through the years

Other entries on the same calendar day, in order.

  1. 1959Cambodian–Vietnamese War
  2. 2002MV Le Joola
  3. 2008Yves Rossy
  4. 2009Typhoon Ketsana
  5. 20102010 Philippine Bar exam bombing
  6. 2010Death of Linda Norgrove
  7. 2014Iguala mass kidnapping
  8. 2014Ayotzinapa Rural Normal School
  9. 2016Ecnomiohyla rabborum
  10. 2022Izhevsk school shooting
  11. 2024Hurricane Helene

Also in 1959

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  • November 16National Airlines Flight 967National Airlines Flight 967 explodes in mid-air over the Gulf of Mexico, killing all 42 aboard.
  • March 181959 Tibetan uprisingTibetan uprising: After the 14th Dalai Lama sought refuge at Sera Monastery in Lhasa, Tibet, Chinese forces bombarded the monastery, infl…

Everything we record for 1959 →

Sources

Cite this page

“Cambodian–Vietnamese War”, What's On This Date, https://whatsonthisdate.com/app/event/cambodian-vietnamese-war-1959-september-26, accessed October 24, 2026.

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Questions about this entry

When did Cambodian–Vietnamese War happen?

September 26 1959 — 67 years ago, on a Saturday.

Where does this text come from?

Wikipedia “On this day” feed. Summaries are short adaptations that link back to the source, not reprints.

How do I cite this page?

Use the ready-made citation near the sources at the bottom of the page, and follow the source link to cite the underlying record as well.

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