[R] Serial Date

[Allan Engelhardt]

On 14/03/11 16:00, David Winsemius wrote:
> On Mar 14, 2011, at 6:36 AM, Allan Engelhardt wrote:
>> On 14/03/11 02:00, Raoni Rosa Rodrigues wrote:
>>> [...]
>>> 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.
>> Not on my system,
>
> Because ... There is a reasonably well understood MS bug in how it 
> handles the non-existent 1900-02-29. (It _still_ accepts that as a 
> valid date and calls it 60. I just re-demonstrated this amazingly 
> persistent bug behavior on the Mac Excel 2011 variant.  )
Amazing.  Just say 'no' to Excel :-)

> http://finzi.psych.upenn.edu/R/library/cxxPack/html/serialNumber.html

Unfortunately, cxxPack has not compiled for a while because of a 
RcppDate issue: 
http://cran.r-project.org/web/checks/check_results_cxxPack.html .  But 
the description is still funny.  Thanks.

Allan