August 1, 1925

• 1925-08

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  In August 1925, the concept of "International Children's Day" was first put forward at the international conference on children's welfare held in Geneva, Switzerland.

June 10, 1942

• 1942-06-10

  • 

  On June 10, 1942, the tragedy in Lidice, Czech Republic occurred, and more than 100 children were maimed.

November 1, 1949

• 1949-11

  • 

  In order to mourn the Lidice Massacre and all the children killed in the war all over the world, in November 1949, the International Federation of Democratic Women decided to take June 1 every year as the International Children's Day.

December 23, 1949

• 1949-12-23

  • 

  After the founding of New China, the Government Affairs Council of the Central People's Government stipulated on December 23, 1949 that China's Children's Day and International Children's Day should be unified.