Timezone/décalage horaire

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Description

Un petit code simple pour afficher l'heure de n'importe quel coin du monde sur le poste utilisateur.
(Mise à jour) Prend en compte les pays suivant l'heure solaire.

Source / Exemple :

<html><head>
<title>decalage horaire</title>
<script language="JavaScript"><!--
function date_infos() {
var days= new Array("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday");
var places= new Array("HAWAI","CANADA","BRAZIL","ENGLAND","FRANCE","KOWEIT","INDIA","CHINA","AUSTRALIA");
var decs= new Array(-600,-360,-180,0,60,180,330,480,600);
var flags= new Array("flag11.jpg","flag8.jpg","flag10.jpg","flag1.jpg","flag0.jpg","flag13.jpg","flag14.jpg","flag12.jpg","flag5.jpg");
var msg='';
//..........................(User/localTime)
var today= new Date();
var HH0= today.getHours();
var MM0= today.getMinutes();
var SS0= today.getSeconds();
var DD0= today.getDay();
//..........................(GMT/UTC)
var dec=today.getTimezoneOffset();
HH0= HH0+Math.floor(dec/60);
MM0= MM0+dec%60;
          if (MM0<0) {HH0= HH0-1; MM0= 60-MM0;}
          if (MM0>60) {HH0= HH0+1; MM0= MM0-60;}
          if (HH0<0) {DD0= DD0-1; HH0= 24+HH0;} //......(day previous)
          if (HH0>=24) {DD0= DD0+1; HH0= HH0-24;}//......(day next)
if (DD0<0) {DD0=6;}
if (DD0>6) {DD0=0;}
msg= "GMT-UTC (Droitwich/England)\n=================\n";
msg +=days[DD0]+" = "+HH0+":"+MM0+":"+SS0;
alert(msg);
//..........................(TIME LAGS)
    msg="<table border align=center>";
    msg += "<tr><td align=center>Location</td><td align=center>(UTC time)</td>";
    msg += "<td align=center>Day</td><td align=center>Local Time</td></tr>";
    for (i=0; i<9; i++) {
    dec=decs[i]; //......(positif ou negatif)
    var DD=DD0; var HH= HH0; var MM= MM0;
    HH= HH+Math.floor(dec/60);
    MM= MM+dec%60;
          if (MM<0) {HH= HH-1; MM= 60-MM;}
          if (MM>60) {HH= HH+1; MM= MM-60;}
          if (HH<0) {DD= DD-1; HH= 24+HH;} //......(day previous)
          if (HH>=24) {DD= DD+1; HH= HH-24;} //......(day next)
    if (DD<0) {DD=6;}
    if (DD>6) {DD=0;}
     msg += "<tr><td align=left><img src="+flags[i]+">&nbsp;"+places[i]+"</td>";
     msg += "<td align=center>(UTC"+dec+")</td><td align=center>"+days[DD]+"</td>";
     msg += "<td align=center>"+HH+":"+ MM +":"+ SS0 +"</td></tr>";}
msg +="</table>"; 
document.write(msg);}
--></script></head>
<body>
<font color=black><font size=2><p>
Free JavaScript provided by ©2004-<a href="http://gilles.saunier.free.fr">VB'Breizh</a><p>
<hr><p>
<script>date_infos()</script>
<p></body></html>