When was Mole Day First Celebrated?

The first mole day was October 23, 2003. It is an unofficial holiday celebrated by scientist and students. A mole is a quantity used by chemist that is an amount equal to the number 6.02 x 1023. Mole day is celebrated annually, it begins at 6:02 am, ends at 6:02 pm on the 23rd day of the 10th month in celebration of the chemist number 6.20 x 1023.