Calculate time difference in Labview from excel file

I am reading in values from a excel files, the file contains date and time data in one cell, then either an On or Off value in the cell next to it. I would like to find the time difference between the on and the off cycles. The VI I have so far brings in the Excel file but I don't know how to subtract the dates. Any help would be appreciated. I have attached the vi and hopefully I can attach and example excel file.
Attachments:
Hobo Import.vi ‏156 KB

Hi Bryan!
I made a small VI (in LabVIEW 7.1) that converts to strings (of your format) to timestamp datatype and then subtracts them resulting in a difference measured in seconds. There might be a more optimal way to do this in your application, but I thought I'd at least try to contribute. Also, notice that there is a Y3K bug in there :-)
Hope this helps!
Travis H.
National Instruments
Travis H.
LabVIEW R&D
National Instruments
Attachments:
FormattoTimeStamp.vi ‏38 KB

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