When was the Korean hangeul alphabet first published?

The Korean hangeul alphabet was first published in 1446 by King Sejong the Great.

What major nuclear development occurred on Oct. 9, 2006?

North Korea conducted its first nuclear test on Oct. 9, 2006. The test had an estimated yield of between 0.4 and 2 kilotons.

What historical events are associated with October 9?

October 9 is associated with the completion of the United Nations Headquarters in New York City in 1952, Cambodia’s declaration of independence as the Khmer Republic in 1970 and a race riot in Boston in 1974.

FRIDAY, Oct. 9, 2026

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Summary

Historical events on Friday, Oct. 9, include the first publication of the Korean hangeul alphabet in 1446, the completion of the United Nations Headquarters in 1952 and North Korea’s first nuclear test in 2006.

Key Facts

King Sejong the Great first published the Korean hangeul alphabet in 1446.
Franklin D. Roosevelt approved an atomic program in 1941 that would become the Manhattan Project.
The United Nations Headquarters construction was completed in New York City in 1952.
North Korea conducted its first nuclear test in 2006, with an estimated yield of between 0.4 and 2 kilotons.

Published Oct 8, 2026 11:00 am KST

768-Charlemagne and his brother Carloman I are both crowned King of the Franks

1000-Leif Erikson reaches "Vinland" (possibly L'Anse aux Meadows, Canada), reputedly becoming the first European to reach North America

1446-Korean hangeul alphabet is first published by King Sejong the Great

1941-U.S. President Franklin D. Roosevelt approves an atomic program that would become the Manhattan Project

1952-The construction of the United Nations Headquarters is completed in New York City

1970-Khmer Republic (Cambodia) declares independence

1974-Race riot in Boston due to "bussing"

2006-North Korea conducts its first nuclear test with an estimated yield of between 0.4 and 2 kilotons

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