Mole Day

Mole Day is observed to promote the study of chemistry.
Celebrated annually on October 23 from 6:02 a.m. to 6:02 p.m., Mole Day commemorates Avogadro's Number (6.02 x 10²³), which is a basic measuring unit in chemistry.
Avogadro number defines the number of particles present in a single mole of any substance.