Midnight at the start of a day is written 0000. 2400 is sometimes used informally to mean the very end of a day (as in a schedule that runs “through 2400”), but as a specific point in time, 0000 is the standard.
Brian Zurawski is a Product Manager at TimeTrakGO with 29 years of experience in the time and attendance industry. He works closely with customers to understand how businesses actually use time clock and workforce management software, and applies that insight to guide what TimeTrakGO builds next. Brian also writes for the TimeTrakGO blog, covering practical topics like time clock options, payroll integration, and overtime compliance for small and mid-sized businesses.