User:Thetimekeeper1986/sandbox

Half an hour (symbol: 1/2h; also abbreviated 1/2hr) is a unit of time conventionally reckoned as 1⁄48 of a day and scientifically reckoned between 1,799.5 and 1,800.5 seconds, depending on the speed of Earth's rotation. There are 30 minutes in half an hour, and 48 half hours in a day.