ITS–World Meteorological Day is celebrated on the 23rd March each year to commemorate the entry into force of the WMO Convention which created the Organization. The purpose of World Meteorological Day is to create awareness of the role of WMO in contributing to the safety and welfare of humanity.
World Meteorological Day often features various events such as conferences, symposia and exhibitions for meteorological professionals, community leaders and the general public. Some events aim to attract media attention to raise the profile of meteorology. Many prizes for meteorological research are presented or announced on or close to World Meteorological Day. These prizes include the International Meteorological Organization Prize, the Professor Dr. Vilho Väisälä Award and the Norbert Gerbier-Mumm International Award.
Many countries issue postage stamps or special postage stamp cancellation marks to celebrate World Meteorological Day. These stamps often reflect the event’s theme or mark a country’s meteorology achievements.