How do we calculate age?
Determining age isn't as simple as subtracting the year. Because months have different lengths (28, 30, or 31 days) and leap years occur every 4 years, a precise calculation requires traversing the calendar date by date.
Fun Facts about Time
Did you know that a "year" isn't exactly 365 days? It's actually about 365.2425 days. This is why we have Leap Years—to keep our calendar aligned with the Earth's orbit around the Sun.