World Metrology Day 2025
World Metrology Day is an annual global celebration on May 20 that emphasizes the importance of metrology, the science of measurement, in everyday life and its contributions to scientific and technological progress. The day is aligned with UNESCO’s goals to promote science for a better world.
Significance in 2025
- Observed on Tuesday, May 20, 2025.
- Theme for the year: ‘Measurements for all times, for all people’, underscoring the vital role of measurements across history, the present, and the future.
- 2025 marks the 150th anniversary of the Metre Convention, an international agreement that standardized the metric system.
Historical Context
- The Metre Convention was signed in Paris on May 20, 1875.
- It established the metric system to ensure consistency and fairness in global research measurements and unit standardization.
Celebration and Participation
- Initiated in 1999 by the International Committee for Weights and Measures (CIPM).
- Involves participation from national metrology institutes, legal metrology authorities, regional organizations, and stakeholders from over 50 countries.
