Excel does not have "SaveDate" field like Word, to achieve your needs, the VBA code could be helpful.
As tag "office-excel-itpro" focuses more on general issues of Excel client, VBA code is out of my support scope, to better help you, I would add the tag "office-vba-dev". Thanks for your understanding.
Personlly, I find the command "FileDateTime" function, you could have a try. If your run following vba, you could get the last modified date and time into the A1. If you want to get the date and time in other cell, I suggest you replace "A1" with a cell you need.
Sub LmodFile()
Range("A1").Value = FileDateTime("File Path")
End Sub
Hope the information could be helpful.
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