Armies started using the 24-hour method of timekeeping as standard military time because, much like police, fire, and medical departments, every branch of the armed services is in continuous operation ...

Trading hours would expand to 23 hours a day, five days a week, with a new overnight session. ・Other exchanges and brokerages are also pushing toward extended-hours stock trading. ・Nasdaq warns ...

Different time formats might seem baffling at first, but the 12-hour and 24-hour clocks each tell fascinating stories about how we've measured our days throughout history. The familiar 12-hour system, ...