How the average of several clock times is found
Shift punches, meter readings and arrival times pile up fast, and the useful question is usually "what time was it, roughly?" This calculator turns each line into seconds past midnight, averages them, and converts the result back to hours, minutes and seconds. It also reports the earliest and latest entry, the largest gap from the average, and the gap for every single line.
Times that straddle midnight
With 23:50 and 00:10 in the list, adding the raw numbers puts the average near noon. That is why two methods are offered. The plain average adds the numbers exactly as typed; the wrap adjustment finds the arrangement that fits every entry into the tightest window and averages inside it. The result states which method ran and how many entries were read as belonging to the next day.
The math is only seconds added and divided, so no reference table is needed. As of October 2026 no external chart or official recommended value is used, and the tool never says which time of day is better. Full date-and-time stamps that carry a year, month and day are not supported, only clock times inside a single day. The average is rounded to the nearest second, so the figure shown can differ from the internal value by under a second.
Frequently asked questions
Yes. You get the exact midpoint of the two, and the largest gap from the average equals half the interval between them.
Use the 00:00:00 form and seconds are counted. If you omit seconds they are read as zero, and the average is rounded to the nearest second.
The times are placed on a 24-hour circle and the arrangement that fits them all into the tightest window is chosen. Times pushed to the front of that window are read as the next day.