Mole Day 2017: When Is Mole Day? πŸ—“

When is Mole Day 2017? This year Mole Day is celebrated on a Monday, October 23, 2017. In 2018, Mole Day is on Tuesday, October 23, 2018.

Mole Day is an unofficial holiday celebrated by chemists and chemistry students on October 23 in honor of the mole, a measuring unit in Chemistry.

The mole measures chemical entities such as atoms or molecules and is formally defined as the amount of any substance that contains as many entities as there are atoms in 12 grams of carbon-12.

Countdown to Mole Day date is below, plus holiday history, celebration info, facts and holiday details.

When is Mole Day 2017? This year Mole Day is on Monday, October 23, 2017.


Associated with Avogadro’s number, a dimensionless measuring unit in Chemistry, the mole approximates to 6.02Γ—10 23 . The number is named after Italian scientist Amedeo Avogadro.

Below you will find all the details for Mole Day 2017 including, are banks open, is there mail delivery and related holiday information.

Is Mole Day a federal holiday?

No, Mole Day is not a federal holiday. There are ten annual US federal holidays on the calendar designated by the United States Congress. The following federal holidays are established by law:

  • New Year’s Day
  • Birthday of Martin Luther King, Jr. (Third Monday in January).
  • Washington’s Birthday (Third Monday in February)
  • Memorial Day (Last Monday in May)
  • Independence Day (July 4)
  • Labor Day (First Monday in September)
  • Columbus Day (Second Monday in October)
  • Veterans Day (November 11)
  • Thanksgiving Day (Fourth Thursday in November)
  • Christmas Day (December 25)

Is Mole Day a national holiday?

Mole Day is not a national holiday. Unlike many other countries, there are no ‘national holidays’ in the United States because Congress only has constitutional authority to create holidays for federal institutions. Most federal holidays are also observered as state holidays.

Is Mole Day a paid holiday?

No, Mole Day is not a paid holiday. The Fair Labor Standards Act (FLSA) does not require payment for time not worked, such as vacations or holidays (federal or otherwise).

Does the mail run on Mole Day?

Yes, there will be mail delivery on Mole Day. All post offices and federal offices of any kind will be open for the holiday, which means businesses and homes will receive mail. This also counts USPS and Fedex packages. See holiday schedule on USPS and Fedex. The only time mail is not being delivered is on federal holidays, which are listed above.

Are banks open on Mole Day?

Mole Day is a Fun holiday, which means all federal offices, courts and most banks will be open. While most banks are open, some banks can operate on their own schedules, so it may be best to check with your local branches. U.S. stock and bond markets like the New York Stock Exchange and NASDAQ will be open. Grocery stores and malls are reportedly open.

If your bank is closed, it is still possible to conduct general banking transactions via ATM, online banking or your mobile phone. Apps and websites are running though not all normal functions may be accessed for the holiday.

Are stores open on Mole Day?

On Mole Day, most stores, restaurants, shopping centers, and malls are open. There are no holidays on which all businesses are closed by law. However, some stores may have shortened or extended holiday hours for the day. Stores may be operating on holiday schedule with limited or reduced hours of operation. Some businesses may be closed on in order to give their employees the day off. For restaurants, stores and other establishments specific to your area, you will have to check with the individual business.

Shop Mole Day Gifts on Amazon

Mole Day 2017

Holiday: Mole Day
Date: October 23, 2017
Weekday: Monday
Holiday Type: Fun
Mole Day 2018: Tuesday, October 23, 2018
Mole Day 2019: Wednesday, October 23, 2019
Mole Day 2020: Friday, October 23, 2020

Fun Holiday Fact

Did you know …that a group of moles is called a labor?

How To Celebrate Mole Day

Get your geek on for this day. Wear a mole t-shirt and when someone asks you about it, explain the concept of mole to them.

Have a mole-themed party and serve guacaβ€œmole” and wear mole (the animal) costumes.

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