From: Pat Maddox <pergesu@...>
Date: 2006-01-30T16:11:49+09:00
Subject: Re: is it Time bug?

On 1/29/06, Joel VanderWerf <vjoel@path.berkeley.edu> wrote:
> Valerij KIR wrote:
> > Hi all! I'm writing program some days ago which calculates every
> > Thursday day in interval given by 2 Time values and see interesting
> > result described later. Is it my or ruby bug?
> >
> > Result
> > -------
> >
> > Thu Sep 01 00:00:00 MSD 2005
> > Thu Sep 08 00:00:00 MSD 2005
> > Thu Sep 15 00:00:00 MSD 2005
> > Thu Sep 22 00:00:00 MSD 2005
> > Thu Sep 29 00:00:00 MSD 2005
> > Thu Oct 06 00:00:00 MSD 2005
> > Thu Oct 13 00:00:00 MSD 2005
> > Thu Oct 20 00:00:00 MSD 2005
> > Thu Oct 27 00:00:00 MSD 2005
> > Wed Nov 02 23:00:00 MSK 2005
> > Wed Nov 09 23:00:00 MSK 2005
> > Wed Nov 16 23:00:00 MSK 2005
> > Wed Nov 23 23:00:00 MSK 2005
> > Wed Nov 30 23:00:00 MSK 2005
> > Wed Dec 07 23:00:00 MSK 2005
> >
> > Code
> > -----
> >
> > t1 = Time.mktime(2005, 9, 1)
> > t2 = Time.mktime(2005, 12, 11)
> > while t1.to_i < t2.to_i
> >   p t1
> >   t1 += 3600*24*7
> > end
> >
>
> This is what I get. Looks like it is the effect of the PDT->PST time
> change (or in your case MSD->MSK).
>
> Thu Sep 01 00:00:00 Pacific Daylight Time 2005
> Thu Sep 08 00:00:00 Pacific Daylight Time 2005
> Thu Sep 15 00:00:00 Pacific Daylight Time 2005
> Thu Sep 22 00:00:00 Pacific Daylight Time 2005
> Thu Sep 29 00:00:00 Pacific Daylight Time 2005
> Thu Oct 06 00:00:00 Pacific Daylight Time 2005
> Thu Oct 13 00:00:00 Pacific Daylight Time 2005
> Thu Oct 20 00:00:00 Pacific Daylight Time 2005
> Thu Oct 27 00:00:00 Pacific Daylight Time 2005
> Wed Nov 02 23:00:00 Pacific Standard Time 2005
> Wed Nov 09 23:00:00 Pacific Standard Time 2005
> Wed Nov 16 23:00:00 Pacific Standard Time 2005
> Wed Nov 23 23:00:00 Pacific Standard Time 2005
> Wed Nov 30 23:00:00 Pacific Standard Time 2005
> Wed Dec 07 23:00:00 Pacific Standard Time 2005
>
> --
>         vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407
>
>

Damn, you win.  Thought I had found an interesting "gotcha" :)