December 5, 2019 International Water Week November 6, 2019 Wars and conflicts and harm to the environment October 31, 2019 Tree Day October 15, 2019 Tree Arab Day October 14, 2019 Arab Environment Day September 16, 2019 International Day for the Protection of the Ozone Layer June 17, 2019 World Day to Combat Desertification June 8, 2019 Day the Protection of Oceans June 5, 2019 World Environment Day May 22, 2019 International Day of Biodiversity 1 2 »