Statalist


[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

st: Re: converting dates from Excel .csv file


From   Kit Baum <baum@bc.edu>
To   statalist@hsphsun2.harvard.edu
Subject   st: Re: converting dates from Excel .csv file
Date   Fri, 29 Aug 2008 06:49:34 -0400

< >

This advice is not stable across platforms on which Excel runs. Not all versions of Excel have the base date 1 January 1900.

I recommend ensuring that in Excel you have four-digit years in the display format of any date field. Then a .csv file containing such date fields is easily read, and those fields converted to Stata dates.


Kit Baum, Boston College Economics and DIW Berlin
http://ideas.repec.org/e/pba1.html
An Introduction to Modern Econometrics Using Stata:
http://www.stata-press.com/books/imeus.html


On Aug 29, 2008, at 02:33 , John wrote:


Another trick with Excel dates (assuming you have the software) is to
open the sheet in Excel and apply a general or numeric format to the
date column. This will show you that (at least for dates subsequent to
1/1/1900) Excel uses elapsed days as well*. All you need to do is
subtract Stata's Day 0 in Excel's number line, 21916 (1/1/1960) from the
Excel elapsed day and you'll get a number that, once imported into
Stata, can be formatted to show the correct date.

E.G.: Date = Aug 28th, 1963

Excel numeric equivalent: 23251 - 21916 = Stata's elapsed day 1335

. di %dM_d,_CY 1335
August 28, 1963
*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index