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<DIV><FONT size=2 face=Arial>Hi John,</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Well there would be some level of accuracy
question. The more accurate the polygon the larger the database. Also if the
lat/lon data was provided by GPS, there is the question of signal
availability.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Basically it just seems dumb that I need to tell my
GPS what time zone it's in. LOL</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Best Regards</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Larry</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=john.haxby@oracle.com href="mailto:john.haxby@oracle.com">John
Haxby</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=tz@lecserver.nci.nih.gov
href="mailto:tz@lecserver.nci.nih.gov">tz@lecserver.nci.nih.gov</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, February 03, 2011 1:54
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: lat/lon to time offset
database</DIV>
<DIV><BR></DIV><BR>
<DIV>
<DIV>On 3 Feb 2011, at 18:33, Larry Ober wrote:</DIV><BR
class=Apple-interchange-newline>
<BLOCKQUOTE type="cite"><SPAN
style="WIDOWS: 2; TEXT-TRANSFORM: none; TEXT-INDENT: 0px; BORDER-COLLAPSE: separate; FONT: medium Helvetica; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; WORD-SPACING: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px"
class=Apple-style-span><SPAN style="FONT-FAMILY: monospace"
class=Apple-style-span>I am looking at building a small embedded system (No
OS) that will require<SPAN
class=Apple-converted-space> </SPAN><BR>determining the local time from
the lat/lon of a location. So basically I need<SPAN
class=Apple-converted-space> </SPAN><BR>lat/lon to time offset from
"GMT".</SPAN></SPAN></BLOCKQUOTE></DIV><BR>
<DIV>Does that work? I'm sure I can find places in Spain that are that
are close to Lisbon than they are Madrid but being in Spain the timezone
should be Europe/Madrid. Also, when you're on going through the channel
tunnel do you go from being closer to Paris than you are to London only when
you've left Calais? Or before you get to Dover?</DIV>
<DIV><BR></DIV>
<DIV>Or have I got hold of the wrong end of the stick?</DIV>
<DIV><BR></DIV>
<DIV>jch</DIV></BLOCKQUOTE></BODY></HTML>