Time measurement is one of the oldest human pursuits. From the Babylonian sexagesimal system (Base 60) to modern atomic clocks, our precision has improved, but the logic remains complex.
Ancient Sumerians and Babylonians used Base 60 because it is highly divisible (by 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, and 30). This is why we have 60 seconds in a minute and 60 minutes in an hour.
When calculating durations for projects, it is vital to distinguish between calendar days (all 7 days) and business days (Monday-Friday, excluding holidays). Our business days calculator automates this by filtering out weekends.