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Date:      Mon, 14 Oct 2002 10:01:37 +1000
From:      Peter Jeremy <peter.jeremy@alcatel.com.au>
To:        Vitor de Matos Carvalho <vitor@softinfo.com.br>
Cc:        FreeBSD-Stable <freebsd-stable@FreeBSD.ORG>
Subject:   Re: Time Zone
Message-ID:  <20021014000136.GC315@gsmx07.alcatel.com.au>
In-Reply-To: <00a301c27304$551ad340$020aa8c0@acaraje>
References:  <000f01c272a4$55c12700$020aa8c0@acaraje> <20021013215429.GB315@gsmx07.alcatel.com.au> <00a301c27304$551ad340$020aa8c0@acaraje>

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On 2002-Oct-13 19:03:16 -0300, Vitor de Matos Carvalho <vitor@softinfo.com.br> wrote:
>These last two lines below:
>
>Rule    Brazil  2000    max     -       Oct     Sun>=8   0:00   1:00    S
>Rule    Brazil  2001    max     -       Feb     Sun>=15  0:00   0       -
>
>Does not indicate the beginning of the summer time in the sunday >= 8 of
>October of 2000 and with the end programmed for the sunday >= 15 of February
>of 2001?

The 2000 and 2001 denote starting years.  The range of years is
defined in conjunction with the following column (max).

They need to be read in conjunction with later lines in the file
(which refer to the 'Brazil' rules), but those two lines define:
Starting in the year 2000 and for all subsequent years (max), daylight
saving starts at midnight (0:00) on the Sunday on or after 8th October
(Sun>=8).  The '1:00' is the amount of time 'saved'.  Likewise,
starting in the year 2001 and for all subsequent years (max), daylight
saving ends at midnight winter time (0:00) on the Sunday on or after
15th February (Sun>=15).

Peter

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