Definitions by Mr. McCall

mole day 

October 23. A "holiday" made for avid chemistry fans, big and small due to the fact that Avagadros Number (6.02*10^23) is very important in that field. Mole day is celebrated on Oct 23 because of the 10^23.

Dude, its Mole day....party at the lab all night long!!! w00t

mole day by Mr. McCall March 15, 2007