Hello young mathematicians!
Have you ever wondered on what day of the week you were born? Maybe you want to plan a special birthday celebration on the same day of the week as your actual birthday. Well, with a little bit of math, you can figure it out!
Step 1: Figure out the year
The first step is to figure out what year you were born in. Let’s say you were born in 2010.
Step 2: Divide the year by 4
Next, divide the year you were born in by 4, and write down the whole number that you get. In this case, 2010 divided by 4 is 502 with a remainder of 2, so you write down 502.
Step 3: Add the year to the result of Step 2
Add the year you were born to the result you got in Step 2. In this case, 502 + 2010 = 2512.
Step 4: Add the century code
Now, add the century code to the result from Step 3. The century code depends on the century that the year you were born in is in. For the 2000s, the century code is 6. So in this case, 2512 + 6 = 2518.
Step 5: Add the month code
Next, add the month code to the result from Step 4. The month code depends on the month you were born in. Here are the codes for each month:
- January: 0
- February: 3
- March: 3
- April: 6
- May: 1
- June: 4
- July: 6
- August: 2
- September: 5
- October: 0
- November: 3
- December: 5
Let’s say your birthday is in May, so you would add 1 to 2518 for a result of 2519.
Step 6: Add the day of the month
Finally, add the day of the month you were born on to the result from Step 5. Let’s say your birthday is on May 15th, so you would add 15 to 2519 for a final result of 2534.
Step 7: Find the remainder
To find out what day of the week you were born on, divide the result from Step 6 by 7 and write down the remainder. In this case, 2534 divided by 7 is 362 with a remainder of 0, so you write down 0.
Step 8: Determine the day of the week
Here is the key to determine which day of the week you were born on. Use the following chart to match the remainder from Step 7 with the corresponding day of the week:
- 0: Sunday
- 1: Monday
- 2: Tuesday
- 3: Wednesday
- 4: Thursday
- 5: Friday
- 6: Saturday
So in this case, the remainder was 0, which means that you were born on a Sunday!
Conclusion:
Now that you know how to figure out which day of the week you were born on, try it out for yourself! Just remember to use the correct century code for the year you were born in. It’s a fun way to learn a little bit about math and history at the same time. Happy birthday!