1. International Day for the Elimination of Racial Discrimination On March 21, 1960, the white racist regime in South Africa brutally suppressed a peaceful march by black South Africans in the town of Sharpeville, resulting in 69 deaths and 180 injuries.

In 1966, the 21st United Nations General Assembly passed a resolution designating March 21 of each year as the "International Day for the Elimination of Racial Discrimination".

2. World Forest Day. In 1971, the Seventh World Forestry Conference decided to designate March 21 each year as World Forest Day, which was also translated as "World Forestry Day" and English as "World Forest Day" to arouse the attention of various countries to human beings.

The green patron saint of China attaches great importance to forest resources.

3. World Sleep Day World Sleep Day is a global event launched by the International Foundation for Mental Health and Neuroscience in 2001 and is set on March 21 every year.

The focus is to draw attention to the importance of sleep and its quality.

The Chinese Sleep Research Association officially introduced it to China in 2003.

4. World Children’s Song Day In 1976, World Children’s Song Day was founded at the biennial International Poetry Conference in Knokke, Belgium. Children under 13 years old celebrate March 21 (the fourth solar term among the twenty-four solar terms) every year.

Equinox) - Celebrated on the first day of spring.

The theme is: caring for children, making peace, eradicating war, and building homes.

This activity is recognized and supported by UNESCO.

5. World Down Syndrome Day Forgotten Angels, Day for Children with Down Syndrome.

In December 2011, the United Nations General Assembly designated March 21 as World Down Syndrome Day (A/RES/66/149), and events have been held annually since 2012.