The World Conference for the Well-being of Children in Geneva, Switzerland proclaimed June 1 to be International Children's Day in1925. It is not clear as to why June 1 was chosen as the International Children's Day: one theory has it that the Chinese consul-general in San Francisco (USA) gathered a number of Chinese orphans to celebrate the Dragon Boat Festival in 1925, which happened to be on June 1 that year.
The holiday is celebrated on 1 June each year. It is usually marked with speeches on children's rights and wellbeing, children TV programs, parties, various actions involving or dedicated to children, families going out, etc.
Universal Children's Day takes place on November 20 annually. First proclaimed by the United Nations General Assembly in 1954, it was established to encourage all countries to institute a day, firstly to promote mutual exchange and understanding among children and secondly to initiate action to benefit and promote the welfare of the world's children.