Which organization designated 29 June as International Day of the Tropics?

Which organization designated 29 June as International Day of the Tropics?

کس تنظیم نے 29 جون کو اشنکٹبندیی کوعالمی دن قرار دیا؟
Explanation

International Day of the Tropics: 29 June

Aim of the day: to raise awareness of tropical areas

Definition of Tropics: A geographic area that roughly corresponds to the area between the tropics of Cancer and Capricorn

United National General Assembly designated 29 June as International Day of the Tropics: 2016