It is the end of 10 years on earth.
it marks the end of the 10th year on earth because your first birthday marks the end of your first year on earth and it continues from there.
You are 10 on your 10th birthday.
15 or 16 years old it depends on your birthday
She is 20 years old. Her birthday was February 10th. (2011)
Schuyler Kunkel is 11 years old. Her birthday is September 10th
41 earth years.
It is on April 10th in 2013, but is on April 9th in leap years.
Paras Arora is 17 years old now and his birthday is on January 10th.
February 10th
AQW's birthday is on the 10th October.
Torchwood children of Earth (CoE) was broadcast over a five day period beginning on the 6th of July 2010 and finishing on the 10th.
Mikey Way is 29 years old. (His birthday is September 10th, 1980.)