Mole Day 1925

Friday, 23 October 1925

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 1925?
Mole Day 1925 is on Friday, 23 October 1925.
What day of the week is Mole Day 1925?
It falls on Friday.
How is Mole Day calculated?
This event is observed every year on 23 October.