Second (s)
Definition: Second na SI base unit for time. Dem define am with radiation frequency of cesium-133 atoms.
History/origin: Dem first take second from day, but for 1967 dem redefine am with atomic definition to get better precision and stability.
Current use: Seconds dey used everywhere for science, engineering, computing, sports, finance, and everyday life.
Day (day)
Definition: Day na normal calendar time unit based on Earth rotation. For converters, dem dey treat 1 day as 24 hours or 86,400 seconds.
History/origin: Long before mechanical clocks, people track time with sunrise, sunset, and the repeating light–dark cycle wey later become the civil day.
Current use: Days dey used for due dates, delivery windows, travel plans, medication intervals, streaks, reservations, payroll periods, and calendar-based scheduling.