Terminology 

24-hour Manifest Rule (24-hour Rule): - U.S. Customs rule requiring carriers to submit a cargo declaration 24 hours before cargo is laden aboard a vessel at a foreign port.



24/7/365: - Referring to operations that are conducted 24 hours a day, 7 days a week, 365 days per year, with no breaks for holidays, etc



24/7: - Referring to operations that are conducted 24 hours a day, 7 days a week