<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<p>The backzone zones cover only a very small part of the problems
we know about.<br>
</p>
<p>Using the backzone prevents using the official tzdata
distribution, as one has to compile with special procedures so
that backzone data are compiled in.<br>
This would prevent us from using the official tzdata packages
provided automatically for Redhat Enterprise Linux.<br>
<br>
<br>
</p>
<div class="moz-cite-prefix">On 03.06.20 13:03, Lester Caine wrote:<br>
</div>
<blockquote type="cite"
cite="mid:8337b6f3-831d-b6f1-decf-6ccfa10e9b0f@lsces.uk">On
03/06/2020 11:01, Alois Treindl wrote: <br>
<blockquote type="cite">It is known that pre-1970 time zone
history is represented in TZ database only for the cities which
define the zone names. <br>
Other areas of countries are often not correctly represented in
TZ database before 1970. <br>
</blockquote>
<br>
In Europe, there are several rules pushed back to the backzone
file which are accurate for all of the times back to the
introduction of 'standard time' but if backzone is omitted from
the TZ data then those areas fall back to the general rules from
the current set prior to 1970. In particular the data during the
Second World War for The islands around the UK is missed. The
amount of missing data is only small, but the fact that it is
missing is not always obvious? <br>
<br>
</blockquote>
</body>
</html>