Re: [TWiki-Dev] [SVN] HideyoImazu r30349 - twiki/trunk/core/lib

[<rhk...@gm...>]

Oops, sorry about the previous message--I clicked "send" by mistake before I 
wrote anything.

This needs no response, but I just wanted to say:

I've had problems with GMT vs. local times (and daylight savings times) 
several times in my career, and what I believe is the best approach is to use 
GMT as the "real" time in the system, but to allow users or others to choose 
to display times in other time zones as they wish.  

Thus, the system works on an "absolute clock" which never varies (i.e., has no 
daylight savings variation), while users can view times in their local times 
(if they wish), even if they occasionally switch to and from daylight savings 
times.  Statistics kept in the system stay based on GMT and aren't confused by 
a switch to or from DST.

Thus, I strongly recommend that TWiki always use GMT internally.

Thanks for letting me stand on this soap box. ;-)

Randy Kramer

PS: Sorry for the top posting.

On Sunday, June 04, 2017 07:19:39 PM Imazu, Hideyo wrote:
> I further updated the summary: SERVERTIME to be in local time; DISPLAYTIME
> and log time stamps to observe {DisplayTimeValues}
> 
> -----Original Message-----
> From: Imazu, Hideyo (Enterprise Infrastructure)
> Sent: Monday, June 05, 2017 07:53
> To: TWiki-Dev list for developers
> Cc: Imazu, Hideyo (Enterprise Infrastructure)
> Subject: RE: [TWiki-Dev] [SVN] HideyoImazu r30349 - twiki/trunk/core/lib
> 
> The summary of the item is misleading. I understand the person who
> reported/created the item lives in the BST time zone and wanted a way to
> have time stamps in their local time zone.
> 
> So I've updated the summary as: TWiki always uses GMT for time stamps on
> log files but local time should be an option.
> 
> -----Original Message-----
> From: rhk...@gm... [mailto:rhk...@gm...]
> Sent: Saturday, June 03, 2017 01:24
> To: TWiki-Dev list for developers
> Subject: Re: [TWiki-Dev] [SVN] HideyoImazu r30349 - twiki/trunk/core/lib
> 
> On Thursday, June 01, 2017 09:48:52 PM Imazu, Hideyo wrote:
> > The commit is not specifically about BST. The item is about using
> > local time instead of GMT if so specified. And now, the code is made that
> > way.
> 
> Thanks--I noticed that, but I still wondered why you thought BST would be a
> better choice than GMT.
> 
> > -----Original Message-----
> > 
> > On Thursday, June 01, 2017 02:12:55 AM de...@de... wrote:
> > > Log:
> > > Item7811: A few related GMT/BST (gmtime/localtime) / daylight-saving
> > > time queries/problems. TWiki uses GMT but (I believe probably)
> > > should use BST
> > 
> > Really?  Why?
>