Tuesday, May 20, 2025

World Metrology Day


World Metrology Day is celebrated globally on May 20 every year to highlight the importance of the science of measurement in our daily lives and raise awareness around it.

Metrology has constantly pushed scientific and technological advancements; this day highlights metrology’s impact on quality of life and conservation of the environment, thereby aligning with UNESCO’s objective to advance science for a better world.

1859, Big Ben chimes for the first time

  On May 31, 1859, Big Ben rang over the Houses of Parliament in Westminster, London, for the first time. In October 1834, a fire destroye...