On a recent Webinar I was asked a question about an unusual date structure that was imported. The structure dd.mm.yy was not recognised by Excel as a date. Here is formula that fixes it.
Below is an example of the date issue.
The formula in cell B2 is
As you can see the dates in column A are left aligned. That is a clue that they are not recognised as dates in Excel. Dates are right aligned.
The SUBSTITUTE function replaces the full stop between the numerals with a / and makes it look like a date.
This isn’t sufficient as the SUBSTITUTE function will return text. The *1 at the end converts the text date in to a real date that Excel recognises.
Note: Power Query can also automatically fix dates like these when it imports data.
As per a comment from Rick Rothstein Excel MVP you can use the Text To Column feature to fix the dates in place.