The hour (h) is a time unit equal to 60 minutes or 3,600 seconds, the standard measure for work shifts, travel times, and business hours worldwide. Payroll calculations, flight durations, and daily schedules are all structured around hours. One hour equals exactly 3,600 seconds, and 24 hours make up one day.

The month (mo) is a time unit averaging approximately 30.44 days or 2,629,746 seconds, used for billing cycles, lease agreements, and financial planning. Calendar months vary from 28 to 31 days, but the average month provides a consistent reference for long-term calculations. One average month equals roughly 4.345 weeks or about 730.5 hours.