how to calculate the difference between two dates and times in excel 2007?
['Type two full dates and times. In one cell, type a full start date/time. ... ', 'Set the 3/14/12 1:30 PM format. Select both cells, and then press CTRL + 1 (or. ... ', 'Subtract the two. In another cell, subtract the start date/time from the end date/time. ... ', 'Set the [h]:mm format.']