How It Works
Calendar anniversaries clamp to the last day of a month; a Feb 29 anniversary is Feb 28 in a non-leap year. This is date arithmetic, not a jurisdiction-specific legal-age determination.
FAQs
How does this calculator work?
Calendar anniversaries clamp to the last day of a month; a Feb 29 anniversary is Feb 28 in a non-leap year. This is date arithmetic, not a jurisdiction-specific legal-age determination.
What assumptions should I check?
Check the units and definitions shown beside each input. Results use the values you enter.