YOU SAID:
I was today years old that
INTO JAPANESE
私は今日何歳だった
BACK INTO ENGLISH
How old i was today
INTO JAPANESE
今日は何歳でしたか
BACK INTO ENGLISH
How old were you today
INTO JAPANESE
今日は何歳でしたか
BACK INTO ENGLISH
How old were you today
That didn't even make that much sense in English.