Posted by Gordon Burditt on 11/15/06 00:36

>I made a test page that just outputs about 100 date('Y-m-d H:i:s');
>
>Occationally (say, 1 out of 30 tries) the time goes backwards by one or
>two seconds. Like:
>
>2006-11-14 07:29:16
>2006-11-14 07:29:16
>2006-11-14 07:29:16
>2006-11-14 07:29:14
>2006-11-14 07:29:14
>2006-11-14 07:29:14
>
>Or even reloading the page, the 2nd page will show an earlier time than
>the first page by one or two seconds.
>
>It's no big deal. It's just interesting. I wonder, how can this happen?

Is the server time synchronized to anything? NTP tries to avoid large
jumps like that, but other methods (like maybe "net time" or "ntpdate")
might not.

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