National Mole Day

6.02 times ten to the twenty-third, observed mostly by chemists.

National Mole Day is a chemistry holiday celebrating Avogadro's number, 6.02 × 10²³, observed from 6:02 AM to 6:02 PM on October 23 (10/23). A "mole" is a unit of measurement in chemistry representing this enormous number of particles. It was created by Italian scientist Amedeo Avogadro in the 19th