YOU SAID:
dance till the night gets old and older
INTO JAPANESE
夜が古くなるまで踊る
BACK INTO ENGLISH
Dance until the night is old
INTO JAPANESE
夜が明けるまで踊る
BACK INTO ENGLISH
Dance until dawn
INTO JAPANESE
夜明けまで踊る
BACK INTO ENGLISH
Dance until dawn
That didn't even make that much sense in English.