e-Day 2017: When Is e-Day? 🗓

When is e-Day 2017? This year e-Day is celebrated on a Friday, January 27, 2017. In 2018, e-Day is on , .

e-Day celebrates the mathematical constant e. which has a value of 2.7182818. It is celebrated on February 7 in countries that follow the month/day (m/d) date format. This is because the first two digits of the date – 2/7 – correspond to the first two digits of the constant.

People living in countries that follow the day/month (d/m) format celebrate it on January 27. The first three digits of this date – 27/1 – match up with the first three digits of e (2.71).

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

When is e-Day 2017? This year e-Day is on Friday, January 27, 2017.


Also known Euler’s number, after the Swiss mathematician Leonhard Euler, e is an irrational number that represents the idea that all continually growing systems are a scaled version of a common rate. It is mostly used in logarithms, exponential growth, and complex numbers. It is one of the most important numbers in mathematics, including 0, 1 and pi (?) .

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

Is e-Day a federal holiday?

No, e-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 e-Day a national holiday?

e-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 e-Day a paid holiday?

No, e-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 e-Day?

Yes, there will be mail delivery on e-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 e-Day?

e-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 e-Day?

On e-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 e-Day Gifts on Amazon

e-Day 2017

Holiday: e-Day
Date: January 27, 2017
Weekday: Friday
Holiday Type: Fun
e-Day 2018: ,
e-Day 2019: ,
e-Day 2020: ,

Fun Holiday Fact

Did you know …that there is an island in northern Scotland called Eday?

How To Celebrate e-Day

Celebrate this fun mathematical holiday by learning more about Euler’s number and its importance in mathematics and science.

Eat foods that begin with e – make eggs, eggplant, or eclairs. Make eggnog as a before dinner refreshment or eggs benedict for breakfast.

Disclaimer: We may get a commission from Amazon sales.

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