Ordinary averaging can give the wrong answer when clock times cross midnight. This calculator uses circular mean by default, so entries such as 23:00 and 01:00 correctly average to 00:00. It also supports duration mode for elapsed hours, minutes and seconds. View clock-face results, inspect individual deviations and check the R coefficient to understand your time averages. https://aitoolspros.com/tools/time/average-time-calculator/