YOU SAID:
Do you know the band green day?
INTO JAPANESE
あなたはバンドグリーンの日を知っていますか?
BACK INTO ENGLISH
Do you know Band Green Day?
INTO JAPANESE
あなたはバンドグリーンデーを知っていますか?
BACK INTO ENGLISH
Do you know Band Green Day?
That didn't even make that much sense in English.