The Day Formula
Have you ever wondered if your next birthday will be on a weekend? Discover a magical formula that can help you determine the day on which a specific date falls!
The Formula
The day of the week for a given date can be calculated using the following formula:
Where:
- D represents the value of the day. D = 0 means Sunday, D = 2 means Tuesday, and so on.
- y is the year
- m is the month
- d is the day
If m is less than 3, then z = y – 1; otherwise, z = y.
The square brackets [] indicate that any fractional value after the decimal point should be ignored. The mod operation gives the remainder after division.
Example Calculation
Let’s calculate the day for February 28th, 2011:
Given: m = 3, d = 28, y = 2011
Plugging these values into the formula:
Calculating this expression gives a result of 1, indicating that February 28th, 2011, falls on a Monday.
Understanding and utilizing this formula can be both fun and insightful!