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Excel/filtering on dates

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Question
Hi Tom

I would like to filter on a column of dates, so that all I see is the dates beginning with 25, ie 25/02/2015, 25/03/2015, 25/04/2015, and so on.  I have tried doing a custom filter of "begins with" 25, but it dosent work.

Have you come across this before?

Thanks

Gail

Answer
Gail,

I would put in a dummy column.

say your dates are in column F with a header in row 1 and data starting in row 2.

say M is the next available column.  In M2 I would put the formula

=Day(F2)

then drag fill that down the column.   Then I would filer on column M (n my hypothesized example).

When talking about dates, the underlying date is stored as a date serial number.  That number is the number of days since 1/1/1900 in most cases.  Formatting it as date produces the more familiar date format you see.    It doesn't appear that the filter has much support for selecting the day of the month across a large range of dates.  
--
Regards,
Tom Ogilvy  
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Tom Ogilvy

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Selected as an Excel MVP by Microsoft since 1999. Answering Excel questions in Allexperts since its inception in 2001. Able to answer questions on almost all aspects of Excel's internal capabilities. If seeking a VBA solution, please specify that in your question itself so I give you the answer you want. [Excel has weak protection - if you are distributing an application, I don't answer questions on how to protect your project from your users.]

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Master of Science (MS) degree Operations Research (ORSA)

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Microsoft MVP in Excel.

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