Topic: Tell me a short, interesting fact about

The Roman Empire was the first and largest empire in history to use a universal time system called "Orbis Terrarum" or "Roma Aeterna" in Latin, which is a precursor to today's worldClock. The system counted the hours of the day continuously, starting from midnight (hour 1) and ending at midnight (hour 24). This timekeeping concept, along with others such as the BC/AD notation and the 365-day calendar, has had a lasting impact on our modern time measurement.