Mole day

OV Digital Desk
1 Min Read

Mole day is celebrated on 23 October each year, by chemists, chemistry students and chemistry enthusiasts, and the celebrations take place between 6:02 AM and 6:02 PM.


In the U.S., the time and date are written 6:02 10/23. The time and date are derived from Avogadro’s number. Avagadro’s number is approximately 6.02×10^23, to define the number of particles present in a single mole of any substance.

This number or a mole is a basic measuring unit for atoms and molecules discovered by Amedeo Avogadro, an 18th-century Italian scientist


An article in The Science Teacher in the early 1980s sparked National Mole Day. A chemistry teacher at Prairie du Chien Senior High School became inspired by the article and founded the National Mole Day Foundation on May 15, 1991.

The day is a special day for all the people associated with the subject of chemistry. Many activities related to moles and chemistry are conducted to mark this day.

In many high schools, Mole Day is celebrated to get their students interested in chemistry, with various activities often related to chemistry or moles.


The theme for Mole Day 2021 is –‘wait for it DispicaMole Me’.

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