YOU SAID:
i have to be home ny 6 pm
INTO JAPANESE
私は午後6時に家にいなければなりません
BACK INTO ENGLISH
I have to stay home at 6 pm
INTO JAPANESE
私は午後6時に家にいなければなりません
BACK INTO ENGLISH
I have to stay home at 6 pm
That didn't even make that much sense in English.