24 hours
One complete day
A span of one full day, whether measured from midnight to midnight or from any point to the same time the next day.
The phrase emphasizes completeness or continuity: The store is open 24 hours, We have 24 hours to respond.
A 24-hour news cycle never stops.
Something available 24/7 operates all day, every day.
- day24-hour period
- nightDark hours daily
- around-the-clockContinuous, without interruption
- round the clockContinuous, without interruption
- nonstopWithout pause or break
all night long · continuous · daily · midnight · late night · noon · early morning · sunrise · sunset · time zone · diner · convenience store · graveyard shift · shift · marathon · clock · circadian · sleepless
- convenience stores7-Eleven, bodega, corner shop, Sheetz, convenience store
- daylight cycledawn, dusk, daylight, daytime, nighttime