International Day against Nuclear Tests observed on 29 August
The International Day against Nuclear Tests was observed on 29 August 2026; the UN General Assembly created the day in 2009 on Kazakhstan's initiative to mark the closure of the Semipalatinsk test site.
Summary
The International Day against Nuclear Tests was observed worldwide on 29 August 2026. The UN General Assembly declared the day through resolution 64/35, adopted unanimously on 2 December 2009 on the initiative of Kazakhstan. The date marks the closure of the Semipalatinsk nuclear test site in Kazakhstan on 29 August 1991, and the day was first observed in 2010. The Comprehensive Nuclear-Test-Ban Treaty (CTBT), adopted on 10 September 1996, bans all nuclear explosions but has not yet entered into force.
Key facts
- Day
- 29 August
- Declared by
- UNGA resolution 64/35, 2 Dec 2009
- Initiative
- Kazakhstan
- Date marks
- Closure of Semipalatinsk test site, 29 Aug 1991
- First observed
- 2010
- CTBT
- Adopted 10 Sep 1996; not yet in force
Practice MCQs 3 questions
The International Day against Nuclear Tests (29 August) was established on the initiative of which country?
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Correct answer: B — Kazakhstan
Kazakhstan initiated UNGA resolution 64/35 to mark the closure of the Semipalatinsk test site on 29 August 1991.
The date 29 August for the International Day against Nuclear Tests marks the closure of which nuclear test site?
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Correct answer: D — Semipalatinsk
The Semipalatinsk test site in Kazakhstan was closed on 29 August 1991.
Consider the following statements: 1. The Comprehensive Nuclear-Test-Ban Treaty (CTBT), adopted in 1996, has entered into force. 2. The International Day against Nuclear Tests was first observed in 2010. Which of the above is/are correct?
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Correct answer: B — 2 only
Statement 1 is wrong: the CTBT, adopted on 10 September 1996, has not yet entered into force. Statement 2 is correct: the day was first observed in 2010.