Hey guys I made a time sheet. In this time sheet i made a macro where when I press ctrl+t it fills in the date in a column and the time in the column next to it. So to start my day I would press ctrl+t and to end it i would goa column over and repeat the macro. and then i made it so that in the fifth column it adds the 2 times together with this formula "=IF(E27>0,(IF(G27>E27, G27-E27, 1+G27-E27)),"")" formula works fine unless you make a "mistake" and change the ending time manually to a time that is early then the starting time but on the same day. So I wanted to see if there is anyway of the total time column can return an error message if the ending time is earlier then the starting time by looking at the date in both date columns. Im going to attach the workbook to this post. on the tabs on the bottom it is under time sheet. and i think the macros should transfer over too. ctrl+t is the time macro if you want to try it out. I may have not been so clear on explaining it so ask any questions if that is true.