[R] Weird Excel Time Format

[Jeff Newmiller]

You haven't indicated how you are accessing the Excel file, or whether it is an XLS or XLSX file. It sounds like you might be using rcom or a dependent package, in which case you may need to read the Excel COM interface documentation more carefully. In any event, you can't expect as.Date to understand the floating-point numbers as if they were formatted dates it they aren't.
For my part, I highly recommend exporting to CSV before importing to R.
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Hasan Diwan <hasan.diwan at gmail.com> wrote:

>I have a 10-column XLS file, with 2 date fields. As far as I can tell,
>they were configured identically in Excel 2010. One of these fields
>resembles "39406.577662037", whilst in Excel, it is shown as
>"2007-11-20 13:42:20". Applying as.Date() with the default format
>doesn't do it. Any ideas as to what format this is? Many thanks! -- H
>
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