Mole Day 1920

Saturday, 23 October 1920

Mole Day is a celebration of chemistry observed on 23 October, honouring Avogadro's number (6.02×10²³) and encouraging interest in science through educational activities and events.

Frequently asked questions

When is Mole Day 1920?
Mole Day 1920 is on Saturday, 23 October 1920.
What day of the week is Mole Day 1920?
It falls on Saturday.
How is Mole Day calculated?
This event is observed every year on 23 October.