The World Day to Combat desertification and drought is observed on which date?

The World Day to Combat desertification and drought is observed on which date?

صحرائی اور خشک سالی سے نمٹنے کا عالمی دن کس تاریخ کو منایا جاتا ہے؟
Explanation

2022 Theme: Rising up from drought together

2021 Theme: Restoration, Land, Recovery