| Dates | UN DAY |
| FEBRUARY | |
| February 2 | World Wetlands Day |
| MARCH | |
| March 1 | World Seagrass Day |
| March 3 | World Wildlife Day |
| March 18 | Global Recycling Day |
| March 21 | International Day of Forests |
| March 22 | World Water Day |
| March 23 | World Meteorological Day |
| March 30 | International Day of Zero Waste |
| APRIL | |
| April 4 | International Day for Mine Awareness and Assistant in Mine Action |
| April 12 | International Day of Human Space Flight |
| April 16 | International Day of Light |
| April 22 | International Mother Earth Day |
| MAY | |
| May 2 | World Tuna Day |
| May 11 | World Migratory Birds Day
|
| May 12 | International Day of Plant Health |
| May 20 | World Bee Day |
| May 21 | International Tea Day |
| May 22 | International Day for Biological Diversity |
| May 30 | International Day of Potato |
| JUNE | |
| June 3 | World Bicycle Day |
| June 5 | World Environment Day |
| June 5 | International Day for the fight against illegal, unreported and unregulated fishing |
| June 7 | World Food Safety Day
|
| June 8 | World Oceans Day |
| June 17 | World Day to combat Desertification and drought |
| June 18 | Sustainable Gastronomy Day |
| June25 | Day of the Seafarer |
| June 28 | National Environment Sanitation Day |
| June 29 | International Day of the Tropics |
| JULY | |
| July 11 | World Population Day |
| July 12 | International Day of Combating Sand and Dust Storms |
| July 20 | International Moon Day |
| July 25 | World Drowning Prevention Day |
| July 27 | World Tourism Day |
| July 31 | World Rangers Day |
| AUGUST | |
| August 29 | International Day against Nuclear Tests |
| SEPTEMBER | |
| September 7 | International Day of Clear Air for Blue Skies |
| September 16 | International Day of the preservation of Ozone layer |
| September 20
(third Saturday of September) |
World Cleanup Day |
| September 26 | World Maritime Day |
| September 27 | World Tourism Day |
| September 29 | International Day for Awareness of food Loss and Waste |
| OCTOBER | |
| October 7
(recognized every first Monday of October each year) |
World Habitat Day |
| October 7 | World Cotton Day |
| October 12 | World Migratory Birds Day |
| October 16 | World Food Day (FAD) |
| October 31 | World Cities Day |
| NOVEMBER | |
| November 2 | International Day to End Impunity for Crimes against Journalists |
| November 5 | World Tsunami Awareness Day |
| November 6 | International Day for Preventing the Exploitation of the Environment in War and Armed Conflict
|
| November 19 | World Toilet Day |
| November 20 | World Children’s Day |
| November 26 | World Sustainable Transport Day
|
| DECEMBER | |
| December 5 | World Soil Day |
| December 7 | International Civil Aviation Day |
| December 11 | International Mountain Day |