International Day of the Tropics 2022: What are tropical regions and why tropical day is celebrated on June 29?

International Day of the Tropics 2022 theme: The International Day of the Tropics is observed annually on June 29 to highlight the significance of tropic regions and the environmental and socio-economic challenges faced by them.

source https://www.jagranjosh.com/current-affairs/international-day-of-the-tropics-2022-what-are-tropical-regions-and-why-tropical-day-is-celebrated-on-june-29-1656475460-1