Re: Telling if a given datetime is within the DST switchover
| From: | Ryan Pallas | Date: | Mon, 30 Mar 2015 15:51:02 +0000 |
| Subject: | Re: Telling if a given datetime is within the DST switchover | ||
| References: | 1 2 3 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-324730@lists.php.net to get a copy of this message | ||
On Mon, Mar 30, 2015 at 9:41 AM, Larry Martell <larry@software-horizons.com>
wrote:
> On Mon, Mar 30, 2015 at 11:36 AM, Lester Caine <lester@lsces.co.uk> wrote:
> > On 30/03/15 16:20, Larry Martell wrote:
> >> The use case is that I have a server uptime reporting script and it
> >> uses a database of times that the server was able to be pinged. If
> >> there is no entry for a period it indicated the server was down. So on
> >> March 29, running in London, it found no entries from 1am to 2am and
> >> it reported the server was down for an hour, when in fact the period
> >> from 1am to 2am did not exist because of the switch to summer time.
> >
> > If you are logging ANYTHING other than UTC then your reporting system is
> > the problem. You DISPLAY times using the local time, and log everything
> > using a clean UTC time.
>
> I 100% agree with you, but this client does not do that. I have told
> them they should, but they did not want to change.
>
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>
Sounds like your only solution may be to convert to UTC to do the logic of
checking for gaps.