YOU SAID:

i made a mistake by eating arbys at dinner time

INTO JAPANESE

夕食時にアービーズを食べてしまった

BACK INTO ENGLISH

I ate Arby's at dinner

INTO JAPANESE

夕食にアービーズを食べました

BACK INTO ENGLISH

I ate Arby's for dinner

INTO JAPANESE

夕食にアービーズを食べました

BACK INTO ENGLISH

I ate Arby's for dinner