Blog about age and dates
Short, clear articles on how age is counted, how the calendar works and what to do with leap dates — with links to our calculators so you can work out your own straight away.
Blog about Age and Dates — Age Calculator Articles
Articles on how age is counted, how the calendar works, leap years and February 29 birthdays. Clear explanations with examples.
Leap Day Birthdays: When to Celebrate February 29
Why February 29 only comes every four years, when leaplings celebrate in common years (February 28 or March 1), and how their age is counted.
How Age Is Calculated: Full vs Partial Years
What full years mean, how age is broken into months and days by the real calendar, and how traditions for counting age differ between countries.
How Many Days Are in a Year (and Why 366 Happens)
How many days are in a common and a leap year, why leap years exist, how many days each month and week has, and how it relates to counting age in days.