Mole Day: October 23rd

October 23rd is Mole Day.

It’s an informal holiday celebrated between 6:02 am and 6:02 pm on this day.

This is derived from the Avogadro number “about 6.02×1023” that defines the number of particles in 1 mol of substance.

On May 15th, 1991, a high school teacher in the state of Wisconsin, USA, Maurice Orler, founded the “National Mole Day Foundation”.

Various activities are carried out by chemists and students around the world.

・References
– NATIONAL MOLE DAY FOUNDATION INC.: What Is Mole Day?