YOU SAID:
You'll know when you meet her.
INTO JAPANESE
あなたは彼女に会ったときに知っているでしょう。
BACK INTO ENGLISH
You will know when I met her.
INTO JAPANESE
あなたは私がいつ彼女に会ったか知っているだろう。
BACK INTO ENGLISH
You will know when I met her.
That didn't even make that much sense in English.