Mole Day 2661

Wednesday, 23 October 2661

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.

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Frequently asked questions

When is Mole Day 2661?
Mole Day 2661 is on Wednesday, 23 October 2661.
What day of the week is Mole Day 2661?
It falls on Wednesday.
How is Mole Day calculated?
This event is observed every year on 23 October.