Here's the setup: 1. In column A I have date/time stamps. 2. In column B I have text entries associated with the time stamps. These entries vary but each day starts with a date/time stamp of "System Login" and ends with a stamp of "System Shutdown". Kind of like a time clock situation. 3. I pull the start times with a VLOOKUP that looks for "System Login" and the stop times with a VLOOKUP that looks for "System Shutdown". If it doesn't find them, it enters "Null". 4. Now I've got columns C & D with 100 rows that say either "Null" or have a date/time stamp. 5. I now have to subtract the date/time values in column C from the matching date/time value in column D to get the duration of time worked for that particular day.
The problem is that the start times and the stop times are in different rows, e.g. I might have the start time for 3/16/09 in C2 and the stop time in D6, the start time for 3/17/09 in C7 and the stop time in D10, and so on. Does anyone know of a formula I can enter in column E that will subtract the first date/time value in column C from the first date/time value in column D, the second date/time in column C from the second date/time in column D and so on down the line? Any help greatly appreciated. --~--~---------~--~----~------------~-------~--~----~ ------------------------------------------------------------------------------------- Some important links for excel users: 1. Excel and VBA Tutorials(Video and Text), Free add-ins downloads at http://www.excelitems.com 2. Excel tutorials at http://www.excel-macros.blogspot.com 3. Learn VBA Macros at http://www.vbamacros.blogspot.com 4. Excel Tips and Tricks at http://exceldailytip.blogspot.com To post to this group, send email to excel-macros@googlegroups.com If you find any spam message in the group, please send an email to: Ayush Jain @ jainayus...@gmail.com or Ashish Jain @ 26may.1...@gmail.com ------------------------------------------------------------------------------------- -~----------~----~----~----~------~----~------~--~---
