<div dir="ltr">Sorry, I was out of town for a bit and was unable to respond. <div><br></div><div><div>FYI, I'm using a .NET library that is backed by the time zone database. Specifically I'm using my own branch of this:</div><div><br></div><div><a href="https://www.nuget.org/packages/Afk.ZoneInfo/">https://www.nuget.org/packages/Afk.ZoneInfo/</a><br></div><div><br></div><div>I installed the 2018e data myself so there is no distributor involved. I suspect that some will think that the problem must be in the code base. I think that's unlikely because the code base has not changed in years and works perfectly except for this one time zone.</div><div><br></div><div>I'll see if I can run the test you suggest, but I don't currently have a Linux or Unix install handy and that looks like Unix to me. </div></div><div><br></div><div>Running my own unit tests, btw, that is not the output I get. For <span style="font-size:12.8px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">Sun Mar 11 07:00:00 2018 UT using the 2018e data I get
<span style="text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">Sun Mar 11 02:00:00 2018 as the local Grand Turk time. So maybe it is a code issue. If I change line 3426 in the northamerica file to this:</span></span></div><div><span style="font-size:12.8px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span style="text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><br></span></span></div><div><span style="background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span style="text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span style="font-size:12.8px"><span style="white-space:pre"> </span>-4:00<span style="white-space:pre"> </span>US<span style="white-space:pre"> </span>AST<span style="white-space:pre"> </span>2018 Mar 11 3:00</span><br></span></span></div><div><span style="background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span style="text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span style="font-size:12.8px"><br></span></span></span></div><div><span style="background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span style="text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span style="font-size:12.8px">I get the correct result. </span></span></span></div><div><span style="background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span style="text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span style="font-size:12.8px"><br></span></span></span></div><div><span style="background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span style="text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><span style="font-size:12.8px"><br></span></span></span></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jul 24, 2018 at 12:56 PM, Paul Eggert <span dir="ltr"><<a href="mailto:eggert@cs.ucla.edu" target="_blank">eggert@cs.ucla.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On 07/24/2018 08:00 AM, Robert MacGrogan wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I'm definitely seeing incorrect behavior when I test dates in July of 2018.<br>
</blockquote>
<br>
How exactly are you testing that? Are you using the data installed by your distributor, or the actual 2018e data?<br>
<br>
What happens when you do this from tzdb 2018e source?<br>
<br>
rm -fr /tmp/tz<br>
make clean<br>
make TOPDIR=/tmp/tz install<br>
./zdump -Vc 2018,2019 America/Grand_Turk<br>
<br>
Here's the output that I get. If you get something different, please investigate.<br>
<br>
America/Grand_Turk Sun Mar 11 06:59:59 2018 UT = Sun Mar 11 02:59:59 2018 AST isdst=0 gmtoff=-14400<br>
America/Grand_Turk Sun Mar 11 07:00:00 2018 UT = Sun Mar 11 03:00:00 2018 EDT isdst=1 gmtoff=-14400<br>
America/Grand_Turk Sun Nov 4 05:59:59 2018 UT = Sun Nov 4 01:59:59 2018 EDT isdst=1 gmtoff=-14400<br>
America/Grand_Turk Sun Nov 4 06:00:00 2018 UT = Sun Nov 4 01:00:00 2018 EST isdst=0 gmtoff=-18000<br>
</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div style="font-family:arial,helvetica,sans-serif;font-size:small;color:rgb(68,68,68)"><p style="font-family:Helvetica,Arial,sans-serif;font-size:12px;line-height:16px;color:rgb(33,33,33);margin-bottom:10px"><span style="font-weight:bold;color:rgb(101,101,101)">Rob MacGrogan</span> <span style="color:rgb(179,179,179)">|</span> <span style="color:rgb(101,101,101)">Director of Software Development</span> <br><a href="mailto:rmacgrogan@flightbridge.com" style="color:rgb(0,82,136);text-decoration:none;display:inline" target="_blank">rmacgrogan@flightbridge.com </a><br><span style="color:rgb(101,101,101)"><a href="tel:850-509-6158" value="+18505096158" style="color:rgb(101,101,101);text-decoration:none" target="_blank">850-509-6158</a></span></p><table border="0" cellpadding="0" width="450" style="font-family:"Times New Roman";table-layout:fixed"><tbody><tr><td align="left" valign="middle" width="170"><p style="margin-right:10px;font-family:Helvetica,Arial,sans-serif;font-size:12px;line-height:14px;margin-bottom:0px;margin-top:0px"><a href="http://www.flightbridge.com/" style="color:rgb(17,85,204);text-decoration:none" target="_blank"><img src="http://www.flightbridge.com/images/brand/flightbridge_logo_email_55.png" alt="FlightBridge" border="0"></a></p></td><td align="left" valign="top" nowrap width="10" style="border-left:1px solid rgb(179,179,179)"><img src="http://www.flightbridge.com/images/defaults/img_trans.gif" width="10"></td><td align="left" valign="middle" nowrap width="290"><p style="font-family:Helvetica,Arial,sans-serif;font-size:12px;line-height:16px;margin-bottom:0px;margin-top:0px"><span style="font-weight:bold;color:rgb(0,82,136)">FlightBridge, Inc.</span> <br><span style="color:rgb(101,101,101)">530 Means Street, Suite 405</span> <br><span style="color:rgb(101,101,101)">Atlanta, GA 30318</span> <br><a href="http://www.flightbridge.com/" style="color:rgb(0,82,136);text-decoration:none;display:inline" target="_blank">www.flightbridge.com</a></p></td></tr></tbody></table><table border="0" cellpadding="0" width="450" style="font-family:"Times New Roman";table-layout:fixed"><tbody><tr><td align="left" valign="middle" width="170"><br></td><td align="left" valign="top" nowrap width="10" style="border-left:1px solid rgb(179,179,179)"><br></td><td align="left" valign="middle" nowrap width="290"><br></td></tr></tbody></table></div></div></div></div></div></div>
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