Mole Day in 2024

Mole Day Quick Facts - US 2024

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2024 Date	October 23, 2024
2025 Date	October 23, 2025

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Mole Day in

Wednesday, Oct 23

Days past:164

Top X Posts (formerly Tweets) for Mole Day -
in 2024

Updated October 24, 2024 at 9:16 AM

Mole rat cuddle puddle for #MoleDay (even though mole rats are neither moles nor rats)! Resembling saber-toothed fuzzy potatoes, these rodents use their long incisors to gnaw through soil, digging elaborate tunnels. They spend nearly their entire lives underground. Show more
— Point Defiance Zoo & Aquarium (@PtDefianceZoo) October 23, 2024

Happy Mole Day part 2 If you didn’t celebrate on 6/02 now’s your chance @compoundchem
— Julian Silverman (@heterocat) October 23, 2024

Happy Mole Day to all who celebrate #MoleDay
— Kathleen Cramer, BS, MA Ed (@kathleenmcramer) October 23, 2024

Happy Mole Day from The Lamb Lab ft. mole cupcakes by one of our 3rd years, Libbi ( @ibbilrogz ) !
— The Lamb Lab UMN (@TheLambLab) October 23, 2024

Today is October 23. Celebrated by chemists annually from 6.02 am to 6.02 pm on October 23rd, Mole Day commemorates Avogadro's number (6.022 x 10"23), which is the number of atoms in exactly 12 grams of carbon-12 (one mole).
— Mario Livio (@Mario_Livio) October 23, 2024

If we told a punny chemistry joke every 10 seconds… it would STILL take over 200,000 TRILLION years to tell a mole of jokes??? (Don’t worry, we won’t try…all the good ones Argon, anyway. ) Happy Mole Day Eve! Show more
— ChemEd 2025 CO School of Mines (@ChemEd2025) October 22, 2024

A mole of moles weigh a little less than the moon. Now you know it. #MoleDay
— Patrick Koppenburg 🐧 (@PKoppenburg) October 23, 2024

Our October CER grad student social hour is this Wednesday - Mole Day!! We have a fun photo scavenger hunt planned & we reserve the last 5-10 minutes for shameless plugs/announcements/recruiting. Here's the link to request the zoom link: Show more
— Daisy Haas (@dahaas_CER) October 21, 2024

When it’s #MoleDay you need multiple representations.
— Ariel Serkin (@aserkin) October 23, 2024

Happy Belated Mole Day (by 41 minutes here) Quote Physics In History @PhysInHistory · 19h Mole Day, celebrated on October 23 from 6:02 a.m. to 6:02 p.m., honors Avogadro's constant (6.02×10²³), the number of particles in a mole, a key chemistry concept.
— Sebastian S. Cocioba🪄🌷 (@ATinyGreenCell) October 23, 2024

Mole Day in 2024

Mole Day commemorates the discovery of the scientific constant, Avogadro's Number, 6.02 x 10²³. The number represents the number of elementary units in ‘one mole’ of any substance.