"Korean Age"

I didn't realize as I was travelling to Korea that I was time travelling as well. Upon arriving here I immediately gained two years. When people here ask how old I am, my answer is 24, although I was 22 in the U.S. Here's how it works in Korea: When you are born, you are 1 year old. They just skip 0. Then, when the new year comes, you gain a year. Your age doesn't change on your birthday. So, if my brother, born on New Year's Eve, was born in Korea, he would've been 2 years old on his second day of life. Weird, huh?