Excel: How to calculate negative time
Filed in Excel on May.05, 2008. Email This article to a Friend
Excel 2007
Edit: As shg correctly points out, every date in your existing spreadsheets will change.
Instructions:
- Click office button (Top left corner)
- Click Excel options
- Click "Advanced"
- Enable "Use 1904 date system"
- Click ok!
Type 08:00 in cell A1, type 09:00 in cell B1.
Related posts:
Insert a new row at the top every time a value has been entered
Find positive and negative amounts that net to zero in excel
Count entries between date and time criteria in excel

















Uh -- you might mention that every date in your spreadsheet will change...