Share trading is now a 24-hour industry.
»a 24-hour emergency line/helpline/hotline
»Responding to market pressure, they are offering 24-hour free telephone access.
»He recalls the scepticism that greeted the notion of 24-hour opening for US supermarkets.
The service can only be used once in a 24-hour period.
a 24-hour stoppage/strike »Unified strike action spread over three twenty-four hour stoppages.