Leap Year Calculator
Check if any year is a leap year. See which years have February 29th and plan accordingly.
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2026 Lacks Bissextile Extension
365 days
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Annual Duration
365
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February Length
28
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Quad Divisible
No
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Classification
Common
Forthcoming Bissextile Years
20282032203620402044
Recent Bissextile Occurrences
201620202024
Frequently Asked Questions
What makes a year a leap year?
A year is a leap year if divisible by 4, except century years which must also be divisible by 400.
Why do orbital adjustments exist?
Astronomical rotation exceeds 365 precisely; periodic corrections maintain seasonal calendar synchronization.
When is the next leap year?
Leap years follow a regular pattern: 2024, 2028, 2032, and so on every 4 years.
What frequency characterizes these adjustments?
Approximately ninety-seven instances populate each four-century span following Gregorian standardization.