YOU SAID:

Today's the day I say, understand?

INTO JAPANESE

今日は私が言う日、理解する？

BACK INTO ENGLISH

Do you understand today, the day I say?

INTO JAPANESE

今日、私が言う日を理解していますか？

BACK INTO ENGLISH

Do you understand the day I say today?

INTO JAPANESE

今日私が言った日がわかりますか？

BACK INTO ENGLISH

Do you know the day I said today?

INTO JAPANESE

今日言った日を知っていますか？

BACK INTO ENGLISH

Do you know the day you said today?

INTO JAPANESE

あなたが今日言った日を知っていますか？

BACK INTO ENGLISH

Do you know the day you said today?