Leap Year Check
Calculator
Is a leap year (1 = yes)
1
Results
- Is a leap year (1 = yes)
- 1
- Days in the year
- 366
- Extra day added by leap year
- 1
- Weeks in the year
- 52.285714
Time and date results
| Is a leap year (1 = yes) | 1 |
| Days in the year | 366 |
| Extra day added by leap year | 1 |
| Weeks in the year | 52.285714 |
formula-map diagram
- Is a leap year (1 = yes)
- 1
- Days in the year
- 366
- Extra day added by leap year
- 1
- Weeks in the year
- 52.285714
Time relationship
Formula
leap year ⇔ (year mod 4 = 0 and year mod 100 ≠ 0) or (year mod 400 = 0)= 1
Note
This is a simplified model: it uses fixed conversions (60 minutes per hour, 24 hours per day, 7 days per week, 365 days per year) and ignores leap years, daylight saving changes, public holidays and irregular month lengths. Check the result against a real calendar before relying on it.