The term '247' is often used as shorthand for "24 hours a day, 7 days a week," which means that something is available or happening all the time without interruption. This phrase suggests that a service is constantly accessible, emphasizing its reliability and continuous operation.
The phrase '24/7' combines the numbers 24 and 7, representing the number of hours in a day and the number of days in a week. The term became popular in the late 20th century, particularly in business and service contexts, to indicate that services are available at all times.