September 16 every year is the International Ozone Layer Protection Day. With the intensification of human activities, there is a serious hole in the ozone layer on the earth's surface. 1974 was discovered by professors F.Sherwood Rowland and Mario Molina of the University of California.

Protecting the ozone layer means protecting the blue sky and life on earth. 1995 65438+1October 23rd, the United Nations General Assembly decided to designate September16th every year as the International Day for the Protection of the Ozone Layer, and requested all parties to take concrete actions to commemorate this day according to the objectives of the Montreal Protocol on Substances that Deplete the Ozone Layer and its amendments.

China Brain Health Day

On September 16, 2000, China named September every year as "Brain Health Month". Many famous experts and scholars, such as Wang Zhongcheng of the Brain Health Professional Committee of the Chinese Medical Association 100, issued an initiative to designate September 16 every year as "Brain Health Day".

Mexican independence day

Mexico's Independence Day. To commemorate Hidalgo, the Mexican people took September 16, the day when the "dolores Call" was issued, as Mexico's Independence Day.

181September 16, Hidalgo, the leader of Mexican independence movement (1753-1811), rang the bell of the church and called the nearby farmers and urban poor. Hidalgo, who was nearly 60 years old, boarded the podium and solemnly announced: "For us, the king or the tax is gone. These hateful taxes are symbols of cruelty and slavery, which have oppressed us for three centuries. "

Then he asked loudly, "Do you want to be free? Three hundred years ago, the hateful Spaniards took the land of our ancestors. Are you willing to take it back? " The crowd shouted in unison: "Long live independence!" "Hang the colonial robber!" This is the famous "dolores Call" in Mexican history, which started the Mexican War of Independence.

Later, in the War of Independence, Hidalgo was betrayed and captured by traitors and died heroically on July 30th, 18 1 1. Later, in order to commemorate Hidalgo, the Mexican people took September 16, the day when the "dolores Call" was issued, as Mexico's independence day.