unofficial-holidays
Oct 22, 2026
Combien de jours avant Mole Day ?
139
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Il reste 139 jours avant Mole Day, soit 19 semaines et 6 jours, ou environ 3336 heures. Cela fait 139 nuits jusqu'au jeudi, octobre 22, 2026.
Mole Day is an unofficial chemistry holiday celebrated every year on October 23 (10/23), chosen to honour Avogadro's number — 6.02 x 10^23 — the foundation of the mole unit in chemistry. It is observed from 6:02 AM to 6:02 PM, making the date and time a direct nod to the famous constant. Mole Day gives students and chemistry enthusiasts worldwide an excuse to celebrate science with themed puns, activities, and treats. Count down the days until Mole Day with our live countdown timer.
