It's the same as my previous fanfic!
To find out what time it is in your country when it is 12 in Korea, just search "Time difference between South Korea and *your country*", so that you have a little reference when it is 2 pm in Korea in Uruguay and Argentina it is 2 am (of the same day), when it is 9 am (Wednesday) in Korea in Uruguay and Argentina it is 9 pm (Tuesday), Uruguay and Argentina are exactly 12 hours ahead of Korea.