Because Excel converts dates and times into numbers behind the scenes, determining time intervals really just requires some simple arithmetic. However, the output format of your calculations will ...

Many Microsoft Excel sheets store date and time values ... and sometimes they do not. If you work with dates and/or times, you need a good understanding of date arithmetic. Briefly: An integer ...

Rather, Excel stores the value as a serial value where January 1, 1900, has a date serial value of 1 and adds 1 for every day moving forward in time. If you were to do the math, you’d find that ...