What festival is March 12?

"Arbor Day" is a festival stipulated by some national laws to publicize forest benefits and mobilize the masses to participate in afforestation. According to the length of time, it can be divided into Arbor Day, Tree Planting Week or Tree Planting Month, collectively known as Arbor Day. China's Arbor Day began in commemoration of the death of Dr. Sun Yat-sen. 1979 On February 23rd, the 6th meeting of the 5th the NPC Standing Committee decided to keep March 12 as China's Arbor Day to encourage people of all ethnic groups to plant trees, green the motherland, improve the environment and benefit future generations.