1. Leap Years

2. What is a leap year?
In most years, February has 28 days.
Approximately every 4 years, February has 29 days.
The years in which February has 29 days are called leap years.

3. What is a “century” year?
A “century” year is any year that is evenly divisible by 100
Examples 1800, 1900, 2000, etc. are evenly divisible by 100 so they are “century” years

4. How can you know if a year is a leap year?
The rules to determine if a specific year is a leap year or not depend on : whether the year is a century year or a non-century year.

5. “Century” Years A century is a leap year if it is divisible by 400
Examples: The year 1800 is NOT a leap year since it is NOT evenly divisible by / 400 = 4.5 The year 2000 IS a leap year since it IS evenly divisible by / 400 = 5

6. Non-Century Years
A non-century year is a leap year if it is evenly divisible by 4
Examples: The year 1995 is NOT a leap year since it is NOT evenly divisible by / 4 = The year 1996 IS a leap year since it IS evenly divisible by / 4 = 499

7. Using the IF statement

8. How to determine if it is a century year?
If year Mod 100 = 0 Then ‘century year Else ‘ non-centry year End If

9. How do you determine if a year is leap year
If year Mod 100 = 0 Then ‘century year If year Mod 400 = 0 ‘ leap year End If Else ‘ non-centry year If year Mod 4 = 0 ‘ leap year End If End If