Date Formats get changed

I think it would help to see examples of the dates that and are not converted.

To best describe or illustrate your problem you would be better off attaching a dummy workbook, the workbook should contain the same structure and some dummy data of the same type as the type you have in your real workbook - so, if a cell c ontains numbers & letters in this format abc-123 then that should be reflected in the dummy workbook. Don't upload a picture when you have a workbook question. None of us is inclined to recreate your data. Upload the workbook and manually add an 'after' situation so that we can see what you expect. In addition clearly explain how you get the results..
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There's no .dbf file ...

You could put it a zip file and upload that.

Regards, TMS

Interestingly, the file opens OK for me and the dates are all fine. It looks as though it must be a problem with Regional Settings. All the dates where the day is less than or equal to 12 are shown as dates in your file. However, they're probably not the date(s) you think they are. For example, the first date in your Excel file is 11/01/2006. When I open the .dbf file, the first date is 01/11/2006 which seems logical as all the dates appear to be for November 2006.

When you are opening the file, it is taking what should be a dd/mm/yyyy formatted date and considering it to be a mm/dd/yyyy formatted date. Although wrong, it "copes" with dates where the day number could be a month number. It falls over when it gets to 13 because that is not a valid month (obviously).

If you select the cells that look like dates, and choose Data | Text to Columns, Delimited, Next, Next, Column Data Format = MDY, Finish, it will convert the dates to what they should be.

Similarly if you choose the text numbers that look like dates and choose the Column Data Format = YMD, it will fix those.

You could ssort on column D first which will bring all the "dates" together followed by all the text. Then you convert all the "dates in one go followed by all the text.

I've attached the .xlsx file I saved from the .dbf file for reference.

Regards, TMS

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