Presumably they are not dates with different formats (in excel)
As the poster mentions the dd/mm/yyyy in the question, they obviously know
the
Excel custom format feature
So I'll assume the various examples have been entered and need turning
into dates
Can't see any easy way, each different type needs to be split putting day,
month and year into 3 helper columns.
Try using string splits for 15.03.08 and 2001.04.30
In certain cases those last 2 formats can be converted using "Date -> Text
to Columns" and using the Date option
You'll need a lookup to convert March, Feb etc into a Month number - for
the =date()
Then resconstruct the excel data from these, using Date(year,month,day)
This last cell can then be formatted dd/mm/yyyy
Steve