Re: [R] Serial Date

From: Gabor Grothendieck <>
Date: Tue, 15 Mar 2011 10:24:19 -0400

On Sun, Mar 13, 2011 at 10:00 PM, Raoni Rosa Rodrigues <> wrote:
> Hello R Help,
> I'm working in a project with a software that register date and time data in serial time format. This format is used by excel, for exemple. In this format, 40597.3911423958 is 2011/2/23 09:23:15. First part is number os days since 1900/1/1, and second part is a fraction of a day.

Try this:

> library(chron)
> chron(40597.3911423958)

[1] (02/24/81 09:23:15)

See R News 4/1 and the references there.

Statistics & Software Consulting
GKX Group, GKX Associates Inc.
tel: 1-877-GKX-GROUP
email: ggrothendieck at

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Received on Tue 15 Mar 2011 - 14:33:26 GMT

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