World Metrology Day (May 20, 2026)

ℹ️ What? World Metrology Day, which celebrates the science of measurement. 📏

👤 Who? The scientists and institutes that ensure a meter or a kilogram means the same thing everywhere in the world.

🌍 Where? All over the world, and historically in Paris, where the Metre Convention was signed.

🕰️ When? Every year on May 20th, since the Metre Convention was signed on May 20, 1875.

❓ Why is it important? Because without reliable and common measurements, airplanes, medicines, or space probes can experience serious accidents.

🎯 For this activity, your goal will be to learn more about units of measurement. 🌡️