Enter two times in 24 hour form and press "Calculate difference". The difference is displayed in days, hours, minutes and seconds.

Days | Hrs | Mins | Secs | ||

Start | — | ||||

End | |||||

Days | Hrs | Mins | Secs | ||

See also 24-hour time calculator

- Enter a time in the top row in 24 hour form. (Example: ten minutes past noon is 12:10:00). If you leave a value empty it is assumed to be zero.
- Enter another time, later than the first, in the second row. This row also allows you to enter a day. So, for example, if you entered 2 in the day field, the second time is taken to be two days after the start time. The first time is always assumed to be day zero.
- Press "Calculate".
- The difference between the two is shown in the lower four rows, in all combinations of days, hours, minutes and seconds.

In 24 hour format, midnight is 00:00:00. The last second of the day is 23:59:59. There is no such time as 24:00:00.

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