All day and all night, continuously without stopping.
लगातार, बिना रुके, दिन-रात
English Usage: The emergency room operates round the clock.
Hindi Usage: आपातकालीन कक्ष चौबीसों घंटे चलता है।
chaubeeson ghante, chhaubees ghante, chhaubeeson ghante, choubis ghante, choubison ghante
