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Re: st: Date format export to excel

From   Neil Shephard <>
Subject   Re: st: Date format export to excel
Date   Wed, 10 Dec 2008 11:55:59 +0000

Ashim Kapoor wrote:
> Hello Neil,
> Thank you for your reply.
> For example the number 586 which under the format %tm mean November
> 2008 in Stata becomes 11/8/2008 in excel, where does excel choose this
> 8th day from ?
> But more than this some dates get even the month wrong like for
> example the number 500 which is september 2001, becomes 9/1/2008. The
> year changes!!!
Are the '586' and the '500' the format of the dates in the file you are
-outsheet-ing to or is this from within Stata?

Open the text file and look at how these have been -outsheet-ed and this
may provide some insight as to why things are happening strangely.
> Does this seem like a simple problem to fix ? Anything like this have you seen?
I'm not very familiar with Excel, but I suspect you are assuming that
Stata and Excel are using the same (arbitrary) reference date for
calculating elapsed dates which is not the case.  In Stata elapsed dates
are counted from 01jan1960 whilst in Excel 2007 they are counted from

The solution is likely to be to -outsheet- with labels and converting
the string dates to the correct format in Excel.


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