If they are born in Jan- Jun 1994, they would be 16 by Jan - Jun 2004 and if they are born in July- Dec 1994, they would be 16 by July - Dec 2004.
If the person hasn't yet had his/her birthday in 2010, they would have been born in 1981. If their birthday was between Jan 1 and Jan 18 (today's date), they were born in 1980.
You would be thirty eight if you were born in January of 1972.
In 2010 Jan youd be 21
54, or if they were born between 1st-6th Jan then 55.
Jan Rulewski was born in 1944.
Jan Szyszko was born in 1944.
Jan Wilson was born in 1944.
Jan Utzon was born in 1944.
Jan Boerstoel was born in 1944.
Jan Reinås was born in 1944.
Jan Hendrikx was born in 1944.
Jan Ertsborn was born in 1944.
Jan Kinder was born in 1944.
Jan Fredrik Wiborg was born in 1944.
Jan Valentin Sæther was born in 1944.
Jan Suchý was born on 1944-10-10.