Oman Participates in Celebrations Marking Regional Environment Day 2025 Muscat, 24 Apr (ONA) --- The Sultanate of Oman today took part in celebrations of the Environment Day of the Region, which falls on 24 April every year. The event marks the signing of Kuwait Regional Convention for Co-Operation on the Protection of Marine Environment from Pollution, the Protocol on Regional Cooperation in Combating Pollution by Oil and Other Harmful Substances in Emergency Situations, signed on 24 April 1978, which led to the establishment of the Regional Organization for the Protection of ...