Number of Days in a Month
Select a month and year to instantly check its exact length in days.
About Month Lengths
Why do months have different lengths?
Month lengths in the Gregorian calendar vary between 28 and 31 days due to historical adjustments originating from the Roman calendar and solar orbit synchronization.
Does February always have 28 days?
No, during leap years (such as 2024 or 2028), February gains an extra day, totaling 29 days.