Date format problem

The attached file contains dates. Some will format. Some will not.
I'd like to be able to format them all.
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Naresh PatelFinancial AdviserCommented:
Try this in column B

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gregfthompsonAuthor Commented:

This allows all cells to be formatted in the same way.
But it still will not allow the date format function to work to change the format.
I am seeking to be able to change the format through the date format function.
Wayne Taylor (webtubbs)Commented:
They are likely entered as Text format. To change to something that can be identified as a date, enter '1' in a blank cell. Copy that cell, select the date cells and Paste Special, with Multiply as the operation.
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Subodh Tiwari (Neeraj)Excel & VBA ExpertCommented:
Because some are Text entries, they look like dates but not the real dates.
To convert them all to real dates, follow these steps..

Select column A --> Data Tab --> Text to columns --> Delimited --> Next --> Next --> Select Date radio button for column data format --> Finish.

Now you can apply all the date formats to the dates in column A.

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Roy CoxGroup Finance ManagerCommented:
Copy a blank cell.

Select all the dataes then PasteSpecial. Scroll don and select PasteSpecial then Add
you are having problem because of regional settings, in the sheet you gave us, what is the correct date for a16? is it dec 10 or oct 12?
if it is OCt 12 then use this in the next cell (b16) to convert it
=IFERROR(DATEVALUE(TEXT(A16,"MM/dd/YYYY")),DATEVALUE(MID(A16,4,2) & "-" & LEFT(A16,2)&"-"&RIGHT(A16,4)))
Naresh PatelFinancial AdviserCommented:

i am not author but i tried and it works perfect.

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Good Comment
gregfthompsonAuthor Commented:
Thanks - works perfectly, and is simple.
Subodh Tiwari (Neeraj)Excel & VBA ExpertCommented:
You're welcome. Glad I could help.
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