E-Day (Eulers Number)
E-day is celebrated to celebrate the mathematical constant e, which is called as Euler’s Number and has a value of 2.7182818.
It is celebrated on
7th of February
every year. The date is chosen from the the first two digits of
the Euler’s Number.
Fibonacci Day
Fibonacci Day is celebrated on
23rd of November
every year. It is celebrated to honour Italian mathematician Leonardo Bonacci, the most talented Western Mathematician of the Middle Ages. He is also known as Leonardo of Pisa and Leonardo Fibonacci. He introduced Europe to the Hindu-Arabic numeral system to ease the calculations with numbers unlike Roman numerals. He introduced one of the most influential sequence of numbers called as Fibonacci Numbers, which further derives a unique ratio in mathematics, called as “Golden Ratio”. Surprisingly,
Golden ratio can describe many phenomenon of nature to financial markets. Fibonacci day is celebrated on 23rd November every year and the date 11/23 is selected because
the digits in 11/23 makes the part of Fibonacci sequence i.e. 1, 1, 2, 3.
National Mathematics Day (India)
National Mathematics day is celebrated in India on
22 December
every year which is the birth anniversary of famous mathematician Srinivasa Ramanujan. He was an Indian mathematician who contributed to number theory, infinite series and continued fractions in his short span of life only. He was the youngest to receive Fellows of the Royal Society and elected as Fellow of Trinity
College, Cambridge.
Palindrome Day
Palindrome Day is the day of the year which makes same pattern like Palindrome. Palindrome is word or a number which can be read in both forward and backward directions and reading in both directions makes the same word or the number. For a day to be a palindrome it must be in a format of mm/dd/yyyy or mm/dd/yy.
Let’s find out below the next palindrome dates.
Example 20 March, 2023. We can write it as 3/20/23 in m/dd/yy format. The number sequence is 32023 in forward direction (left to right). And, number sequence is 32023 in backward direction (right to left). So, it is a palindrome because the number 32023 comes out to be same if read in either direction, which makes 3/20/23 as a palindrome day. List of Palindrome Days
Date Number in forward direction Number in backward direction
March 20, 2023 (3/20/23) 32023 32023
March 21, 2023 (3/21/23) 32123 32123
March 22, 2023 (3/22/23) 32223 32223
March 23, 2023 (3/23/23) 32323 32323
March 24, 2023 (3/24/23) 32423 32423
March 25, 2023 (3/25/23) 32523 32523
March 26, 2023 (3/26/23) 32623 32623
March 27, 2023 (3/27/23) 32723 32723
March 28, 2023 (3/28/23) 32823 32823
March 29, 2023 (3/29/23) 32923 32923
Pi Day (International Day of Mathematics)
Pi is the most famous number and a mathematical constant, which has a value of 3.142. It is observed on
14 March
of every year. It is also known by the name of International Day of Mathematics from November, 2019 onwards. The official website of International Day of Mathematics is https://www.idm314.org/. It is observed on 3/14 because the three digits 3, 1 and 4 makes the first 3 numbers of Pi value.
Pythagorean Theorem Day
Pythagorean Theorem Day is celebrated all over the world to celebrate the famous theorem of Geometry Pythagoras Theorem. The date of celebration is calculated using the Pythagoras formula.
We know the Pythagoras formula states that the sum of squares of perpendicular and base is equal to the square of the hypotenuse.
The date of celebration in a year falls on the day when the sum of squares of date and month equals the square of the last two digits of the year. Example
Pythagorean Theorem Day in year 2017 was 15 August, 2017. Let’s see how it is calculated.
Date = 15 Month = 8 Last two digits of year 2017 = 17 also,
So, for 15 .08.17, sum of squares of 15 and 8 is equal to square of 17.
This is how the date is calculated for Pythagorean Theorem Day.
The next Pythagorean Theorem Day in the future falls on 24 July, 2025.
Square Root Day
Square Root Day is the rarest mathematics day because it cannot be celebrated every year. Surprisingly, its occurrence is only 9 times in one century. It is celebrated on the days when both date and month are the square root values of the last two digits of the year.
15 square + 8 square = 225 + 64 = 289 = 17 square
It was started by Ron Gordon, a high school teacher from Redwood City, California on September 9, 1981 (9/9/81).
The last square root day celebrated was on 4 April, 2016 (4/4/2016). The next upcoming Square Root Day is 5 May, 2025 (5/5/25).
Let’s take an example of square root day and see how it is calculated. Example: February 2, 2004 (2/2/04)
day = 2, month = 2, year = 04
So, square root of year 04 is equal to both day 02 and month 02 of 2/2/04 List of Square Root Days in a century
Date Day Month Year Square root of year
January 1, 2001 (1/1/01) 1 1 1 = 1
February 2, 2004 (2/2/04) 2 2 4 = 2
March 3, 2009 (3/3/09) 3 3 9 = 3
April 4, 2016 (4/4/16) 4 4 16 = 4
May 5, 2025 (5/5/25) 5 5 25 = 5
June 6, 2036 (6/6/36) 6 6 36 = 6
July 7, 2049 (7/7/49) 7 7 49 = 7
August 8, 2064 (8/8/64) 8 8 64 = 8
September 9, 2081 (9/9/81) 9 9 81 = 9
Women in Mathematics Day
Women in Mathematics Day is celebrated worldwide on
12th of May
every year. It is the day to celebrate for women in mathematics for their achievements in the field of mathematics and to encourage to an open, welcoming and inclusive environment for everybody.
The events to celebrate the day take place from 1 May to 15 June.
May 12 Initiative is the website whose goal is to inspire women everywhere in the world to
celebrate their achievements in mathematics and to encourage an open, welcoming and
inclusive work environment for everybody.
World Maths Day
World Maths Day (23 March 2023) is a global celebration of mathematics where millions of students aged 5 to 18 across the world compete in Live Mathletics challenges. It’s free and open to schools all over the world. Any student aged from 5 to 18 years can participate and win the prizes.
If you would like to know more about how it works, please click on this link to read more about it.