Do you know someone born in 2009? If so, you might be wondering how old they are now. In this article, we’ll take a closer look at how to calculate the age of someone born in 2009.
Calculating Age
Calculating someone’s age is pretty straightforward. You simply subtract their birth year from the current year. For example, if someone was born in 2009 and it’s currently 2021, you would do the following calculation:
2021 – 2009 = 12
So someone born in 2009 would be 12 years old in 2021.
Leap Years
However, there is one important consideration when it comes to calculating age: leap years. Leap years occur every four years and add an extra day to February. This is because the Earth doesn’t take exactly 365 days to orbit the sun. Leap years help keep our calendars in sync with the Earth’s orbit.
So if someone was born in 2009, they would have experienced two leap years so far: 2012 and 2016. To account for these extra days, you need to add one day to your calculation for each leap year.
2021 – 2009 = 12 (years)
Plus 2 (for the two leap years)
12 + 2 = 14
So someone born in 2009 would be 14 years old in 2021, accounting for the two leap years they’ve experienced.
Future Age
If you’re trying to determine someone’s age for a future date, you can use the same process. Simply subtract their birth year from the future year, accounting for any leap years that may occur between now and then.
For example, if you want to know how old someone born in 2009 will be in 2030, you would do the following calculation:
2030 – 2009 = 21
Plus 4 (for the four leap years between now and then)
21 + 4 = 25
So someone born in 2009 would be 25 years old in 2030, accounting for the leap years that will occur between now and then.
Conclusion
Calculating the age of someone born in 2009 is pretty simple. You just need to subtract their birth year from the current year or the future year you’re interested in, accounting for any leap years that may occur between now and then. Knowing someone’s age can be useful for a variety of reasons, from planning birthday parties to understanding generational differences. We hope this article has helped clarify how old someone born in 2009 would be now or in the future.