Calculate your exact age in multiple units
If you were born in a leap year, you've experienced an extra day in February! Leap years occur every 4 years (with some exceptions).
Your age would be different on other planets! On Mercury, you'd be much older (shorter year), while on Neptune, you'd be much younger (longer year).
In a room of just 23 people, there's a 50% chance that two people share the same birthday. This is known as the "Birthday Paradox"!
As we age, time seems to pass faster. This is partly because each year becomes a smaller fraction of our total life experience.