[Numpy-discussion] Making datetime64 timezone naive

[Chris Barker]

On Fri, Oct 16, 2015 at 10:19 AM, Alexander Belopolsky <ndarray at mac.com>
wrote:

> Since Guido hates leap seconds, PEP 495 is silent on this issue, but
> strictly speaking UTC leap seconds are "folds."   AFAICT, a strictly POSIX
> system must repeat the same value of time_t when a leap second is
> inserted.  While datetime will never extend the second field to
>
 allow second=60, with PEP 495, it is now possible to represent 23:59:60 as
 23:59:59/fold=1.

Thanks -- If anyhone decides to actually get arond to leap seconds suport
in numpy datetime, se can decide whether to do folds or allow second: 60.

Off the top of my head, I think allowing a 60th second makes more sense --
jsut like we do leap years. Granted, external systems often don't
understand/allow a 60th second, but they generally don't understand a fold
bit, either....

-CHB






> Apart from leap seconds, there is no need to use "fold" on datetimes that
> represent time in UTC or any timezone at a fixed offset from utc.
>
> _______________________________________________
> NumPy-Discussion mailing list
> NumPy-Discussion at scipy.org
> https://mail.scipy.org/mailman/listinfo/numpy-discussion
>
>


-- 

Christopher Barker, Ph.D.
Oceanographer

Emergency Response Division
NOAA/NOS/OR&R            (206) 526-6959   voice
7600 Sand Point Way NE   (206) 526-6329   fax
Seattle, WA  98115       (206) 526-6317   main reception

Chris.Barker at noaa.gov
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/numpy-discussion/attachments/20151017/266f33c6/attachment.html>