YOU SAID:
today was going to be the day that i was going to throw it back to you
INTO JAPANESE
今日はあなたにそれを投げ返すつもりだった日になるだろう
BACK INTO ENGLISH
Today will be the day I was going to throw it back to you
INTO JAPANESE
今日はあなたにそれを投げ返すつもりだった日になります
BACK INTO ENGLISH
Today is the day I was going to throw it back to you
INTO JAPANESE
今日は私があなたにそれを投げ返すつもりだった日です
BACK INTO ENGLISH
Today is the day I was going to throw it back to you
You've done this before, haven't you.