如何确定系统'；JavaScript中的Olson zoneinfo？
我感兴趣的是检索当前zoneinfo字符串（“America/Los Angeles”、“Europe/London”等），该字符串是用户当前用JavaScript为其操作系统设置的。我已经找到了如何以秒为单位获取当前偏移量、特定日期的偏移量以及不太精确的时区（PST等），但没有找到Olson zoneinfo。这可能吗？您必须在Javascript中设置zoneinfo数据的数组或散列，并根据拾取的时间确定名称。不可能。很抱歉您可能可以通过使用时区的Java小程序获得它，但从JavaScript中，您所拥有的只是UTC的偏移量。（根据时区名称进行猜测是不可靠的，因为名称依赖于区域设置。您可能可以通过匹配UTC偏移量来检测一些常见情况，但这需要大量工作。） 通常，如果您想支持像Olson一样细粒度的时区，您应该为用户提供一个明确的可选时区控件。请参阅。您可能只需要列出以下内容：如何确定系统'；JavaScript中的Olson zoneinfo？,javascript,timezone,zoneinfo,Javascript,Timezone,Zoneinfo,我感兴趣的是检索当前zoneinfo字符串（“America/Los Angeles”、“Europe/London”等），该字符串是用户当前用JavaScript为其操作系统设置的。我已经找到了如何以秒为单位获取当前偏移量、特定日期的偏移量以及不太精确的时区（PST等），但没有找到Olson zoneinfo。这可能吗？您必须在Javascript中设置zoneinfo数据的数组或散列，并根据拾取的时间确定名称。不可能。很抱歉您可能可以通过使用时区的Java小程序获得它，但从JavaScrip
几个月前我就在这个问题上进行了研究，结果是：。该脚本将无法提供最精确的结果。例如，它将返回欧洲/柏林，无论您在中欧时区的何处 基本上，当夏时制转换发生时，它会检查已知的日期
希望它能有所帮助。我使用了乔恩·尼兰德（Jon Nylander）令人敬畏的探测器（基于乔什·弗雷泽（Josh Fraser）的脚本）的一些想法，制作了一个更简单的脚本。Nylander的脚本（以及中的jQuery对应脚本）使用歧义列表，DST开始时间与本地时间相同。我的脚本只有一个列表，所有日期都以UTC为单位，以便在需要时添加或修改时区 用法：
-另存为.js并包含在html标题部分
-调用get_timezone_id（）并返回用户的时区，例如“Europe/Helsinki” 此脚本可以检测90个时区，但如果需要更多，则必须使用地理位置API或某些服务器端库（geoIP）。根据目的，还考虑添加用户可选的时区列表。 还要注意的是，因为我们不知道未来的浏览器和系统如何保存2011年的过渡数据，所以将来可能需要做一些调整。（我在1970-80年测试了日期，结果在同一系统中的不同浏览器之间差异很大（！），但幸运的是，2011年已经过去了，世界上几乎所有的系统都有希望更新其tz数据库，现在的检测应该相当好了
/*
This script (Javascript Timezone Detection) detects Olson timezone
ID of user's system's timezone using getTimezoneOffset(). Detection
is tested and passed 100% in the following conditions:
* Windows 7,Opera 11.00
* Windows 7,Firefox 3.6.13
* Windows 7,Safari 5.0.3
* Windows 7,Google Chrome 8.0.552.237
* Windows 7,Internet Explorer 8.0.7600.16385
* Mac OS X,Google Chrome 8.0.552.237
* Mac OS X,Firefox 3.6.13
* Mac OS X,Opera 11.01
* Mac OS X,Safari Version 5.0.3
* Centos 5,Firefox 3.6.13
* Centos 5,Safari
* Centos 5,Opera 11.00
The script has ability to detect 90 timezones.
Every row in zones-array consist of
0: Olson timezone ID,
1-6: Transition start time in UTC (usually summer time start and sometimes winter time start)
7: Utc offset in minutes
8: 1 = has transition,0 = has not transition
Timezones are listed in zones-array this way:
- first comes section of timezones, that have transitions and then section of timezones that have no transitions
- Both sections are then ordered by offset
- Finally the has transitions section is ordered by the transition start time.
If you add more timezones or replaces some, please be sure to maintain this order, otherwise the detection fails in some cases.
Minified size: about 4.46KB
*/
var zones = new Array(
// FIRST DST TIMEZONES
[ 'Pacific/Apia', 2011,3,3,11,0,0, -660, 1 ]/* For Opera Linux. Unexpectedly winter-offset. */,
[ 'Pacific/Apia', 2010,8,26,11,0,0, -600, 1 ]/* STD: -660 */,
[ 'America/Adak', 2011,2,13,12,0,0, -540, 1 ]/* STD: -600 */,
[ 'America/Anchorage', 2011,2,13,11,0,0, -480, 1 ]/* STD: -540 */,
[ 'America/Los_Angeles', 2011,2,13,10,0,0, -420, 1 ]/* STD: -480 */,
[ 'America/Santa_Isabel', 2011,3,3,10,0,0, -420, 1 ]/* STD: -480 */,
[ 'America/Denver', 2011,2,13,9,0,0, -360, 1 ]/* STD: -420 */,
[ 'America/Mazatlan', 2011,3,3,9,0,0, -360, 1 ]/* STD: -420 */,
[ 'America/Chicago', 2011,2,13,8,0,0, -300, 1 ]/* STD: -360 */,
[ 'America/Mexico_City', 2011,3,3,8,0,0, -300, 1 ]/* STD: -360 */,
[ 'Pacific/Easter', 2011,9,9,4,0,0, -300, 1 ]/* STD: -360 */,
[ 'America/Havana', 2011,2,13,5,0,0, -240, 1 ]/* STD: -300 */,
[ 'America/New_York', 2011,2,13,7,0,0, -240, 1 ]/* STD: -300 */,
[ 'America/Goose_Bay', 2011,2,13,4,1,0, -180, 1 ]/* STD: -240 */,
[ 'America/Halifax', 2011,2,13,6,0,0, -180, 1 ]/* STD: -240 */,
[ 'Atlantic/Stanley', 2011,8,4,6,0,0, -180, 1 ]/* STD: -240 */,
[ 'America/Asuncion', 2011,9,2,4,0,0, -180, 1 ]/* STD: -240 */,
[ 'America/Santiago', 2011,9,9,4,0,0, -180, 1 ]/* STD: -240 */,
[ 'America/Campo_Grande', 2011,9,16,4,0,0, -180, 1 ]/* STD: -240 */,
[ 'America/St_Johns', 2011,2,13,3,31,0, -150, 1 ]/* STD: -210 */,
[ 'America/Miquelon', 2011,2,13,5,0,0, -120, 1 ]/* STD: -180 */,
[ 'America/Godthab', 2011,2,27,1,0,0, -120, 1 ]/* STD: -180 */,
[ 'America/Montevideo', 2011,9,2,5,0,0, -120, 1 ]/* STD: -180 */,
[ 'America/Sao_Paulo', 2011,9,16,3,0,0, -120, 1 ]/* STD: -180 */,
[ 'Atlantic/Azores', 2011,2,27,1,0,0, 0, 1 ]/* STD: -60 */,
[ 'Atlantic/Azores', 2010,2,28,3,0,0, 0, 1 ], /* Windows fix */
[ 'Europe/London', 2011,2,27,1,0,0, 60, 1 ]/* STD: 0 */,
[ 'Europe/Berlin', 2011,2,27,1,0,0, 120, 1 ]/* STD: 60 */,
[ 'Africa/Windhoek', 2011,8,4,1,0,0, 120, 1 ]/* STD: 60 */,
[ 'Asia/Gaza', 2011,2,25,22,1,0, 180, 1 ]/* STD: 120 */,
[ 'Asia/Beirut', 2011,2,26,22,0,0, 180, 1 ]/* STD: 120 */,
[ 'Europe/Minsk', 2011,2,27,0,0,0, 180, 1 ]/* STD: 120 */,
// Istanbul and Helsinki are the same, please select which one to use
// [ 'Europe/Istanbul', 2011,2,27,1,0,0, 180, 1 ]/* STD: 120 */,
[ 'Europe/Helsinki', 2011,2,27,1,0,0, 180, 1 ]/* STD: 120 */,
[ 'Asia/Jerusalem', 2011,3,1,0,0,0, 180, 1 ]/* STD: 120 */,
[ 'Africa/Cairo', 2011,3,28,22,0,0, 180, 1 ]/* STD: 120 */,
[ 'Asia/Damascus', 2011,9,27,21,0,0, 120, 1 ]/* Unexpectedly here winter-offset */,
[ 'Asia/Amman', 2011,9,27,22,0,0, 120, 1 ]/* Unexpectedly here winter-offset */,
[ 'Europe/Moscow', 2011,2,26,23,0,0, 240, 1 ]/* STD: 180 */,
[ 'Asia/Tehran', 2009,2,21,20,30,0, 270, 1 ]/* STD: 210 */,
[ 'Asia/Yerevan', 2011,2,26,22,0,0, 300, 1 ]/* STD: 240 */,
[ 'Asia/Baku', 2011,2,27,0,0,0, 300, 1 ]/* STD: 240 */,
[ 'Asia/Yekaterinburg', 2011,2,26,21,0,0, 360, 1 ]/* STD: 300 */,
[ 'Asia/Omsk', 2011,2,26,20,0,0, 420, 1 ]/* STD: 360 */,
[ 'Asia/Krasnoyarsk', 2011,2,26,19,0,0, 480, 1 ]/* STD: 420 */,
[ 'Asia/Irkutsk', 2011,2,26,18,0,0, 540, 1 ]/* STD: 480 */,
[ 'Asia/Yakutsk', 2011,2,26,17,0,0, 600, 1 ]/* STD: 540 */,
[ 'Australia/Adelaide', 2011,9,1,16,30,0, 630, 1 ]/* STD: 570 */,
[ 'Asia/Vladivostok', 2011,2,26,16,0,0, 660, 1 ]/* STD: 600 */,
[ 'Australia/Lord_Howe', 2011,9,1,15,30,0, 660, 1 ]/* STD: 630 */,
[ 'Australia/Sydney', 2011,9,1,16,0,0, 660, 1 ]/* STD: 600 */,
[ 'Pacific/Fiji', 2011,2,5,14,0,0, 720, 1 ]/* STD: 660 */,
[ 'Pacific/Fiji', 2011,2,26,14,0,0, 720, 1 ]/* STD: 660 */,
[ 'Asia/Kamchatka', 2011,2,26,15,0,0, 720, 1 ]/* STD: 660 */,
[ 'Pacific/Auckland', 2011,8,24,14,0,0, 780, 1 ]/* STD: 720 */,
[ 'Pacific/Chatham', 2011,8,24,14,0,0, 825, 1 ]/* STD: 765 */,
// AND THEN NON-DST TIMEZONES:
[ 'Etc/GMT+12', 2011,0,1,0,0,0, -720, 0 ]/* STD: -720 */,
[ 'Pacific/Pago_Pago', 2011,0,1,0,0,0, -660, 0 ]/* STD: -660 */,
[ 'Pacific/Kiritimati', 2010,0,1,0,0,0, 840, 0, '(LINT)' ], /* To prevent Firefox detecting Pacific/Kiritimati as Pacific Honolulu */
[ 'Pacific/Honolulu', 2011,0,1,0,0,0, -600, 0 ]/* STD: -600 */,
[ 'Pacific/Marquesas', 2011,0,1,0,0,0, -570, 0 ]/* STD: -570 */,
[ 'Pacific/Gambier', 2011,0,1,0,0,0, -540, 0 ]/* STD: -540 */,
[ 'Pacific/Pitcairn', 2011,0,1,0,0,0, -480, 0 ]/* STD: -480 */,
[ 'America/Phoenix', 2011,0,1,0,0,0, -420, 0 ]/* STD: -420 */,
[ 'America/Guatemala', 2011,0,1,0,0,0, -360, 0 ]/* STD: -360 */,
[ 'America/Bogota', 2011,0,1,0,0,0, -300, 0 ]/* STD: -300 */,
[ 'America/Caracas', 2011,0,1,0,0,0, -270, 0 ]/* STD: -270 */,
[ 'America/Santo_Domingo', 2011,0,1,0,0,0, -240, 0 ]/* STD: -240 */,
[ 'America/Argentina/Buenos_Aires', 2011,0,1,0,0,0, -180, 0 ]/* STD: -180 */,
[ 'America/Noronha', 2011,0,1,0,0,0, -120, 0 ]/* STD: -120 */,
[ 'Atlantic/Cape_Verde', 2011,0,1,0,0,0, -60, 0 ]/* STD: -60 */,
[ 'Africa/Casablanca', 2011,0,1,0,0,0, 0, 0 ]/* STD: 0 */,
[ 'Africa/Lagos', 2011,0,1,0,0,0, 60, 0 ]/* STD: 60 */,
[ 'Africa/Johannesburg', 2011,0,1,0,0,0, 120, 0 ]/* STD: 120 */,
[ 'Asia/Baghdad', 2011,0,1,0,0,0, 180, 0 ]/* STD: 180 */,
[ 'Asia/Dubai', 2011,0,1,0,0,0, 240, 0 ]/* STD: 240 */,
[ 'Asia/Kabul', 2011,0,1,0,0,0, 270, 0 ]/* STD: 270 */,
[ 'Asia/Karachi', 2011,0,1,0,0,0, 300, 0 ]/* STD: 300 */,
[ 'Asia/Kolkata', 2011,0,1,0,0,0, 330, 0 ]/* STD: 330 */,
[ 'Asia/Kathmandu', 2011,0,1,0,0,0, 345, 0 ]/* STD: 345 */,
[ 'Asia/Dhaka', 2011,0,1,0,0,0, 360, 0 ]/* STD: 360 */,
[ 'Asia/Rangoon', 2011,0,1,0,0,0, 390, 0 ]/* STD: 390 */,
[ 'Asia/Jakarta', 2011,0,1,0,0,0, 420, 0 ]/* STD: 420 */,
[ 'Asia/Shanghai', 2011,0,1,0,0,0, 480, 0 ]/* STD: 480 */,
[ 'Australia/Eucla', 2011,0,1,0,0,0, 525, 0 ]/* STD: 525 */,
[ 'Asia/Tokyo', 2011,0,1,0,0,0, 540, 0 ]/* STD: 540 */,
[ 'Australia/Darwin', 2011,0,1,0,0,0, 570, 0 ]/* STD: 570 */,
[ 'Australia/Brisbane', 2011,0,1,0,0,0, 600, 0 ]/* STD: 600 */,
[ 'Pacific/Noumea', 2011,0,1,0,0,0, 660, 0 ]/* STD: 660 */,
[ 'Pacific/Norfolk', 2011,0,1,0,0,0, 690, 0 ]/* STD: 690 */,
[ 'Pacific/Tarawa', 2011,0,1,0,0,0, 720, 0 ]/* STD: 720 */,
[ 'Pacific/Tongatapu', 2011,0,1,0,0,0, 780, 0 ]/* STD: 780 */,
[ 'Pacific/Kiritimati', 2011,0,1,0,0,0, 840, 0 ]/* STD: 840 */
)
function get_timezone_id()
{
var tz="";
for (var i in zones)
{
olson_name = zones[i][0];
has_transitions = zones[i][8];
date_1 = new Date(Date.UTC(zones[i][1],zones[i][2],zones[i][3],zones[i][4],zones[i][5],zones[i][6]));
date_1_offset_data = zones[i][7];
date_1_offset_user = -date_1.getTimezoneOffset();
date_2 = new Date(Date.UTC(zones[i][1],zones[i][2],zones[i][3],zones[i][4],zones[i][5],zones[i][6]) - 1000);
date_2_offset_user = -date_2.getTimezoneOffset();
var patt1=/\([^)]+\)/g;
if (zones[i][9] != undefined) var abbr = zones[i][9]; // To determine Pacific/Kiritimati in Firefox
else var abbr = "";
if
(
abbr == date_1.toString().match(patt1)
// Detect timezones that has transitions
|| (has_transitions && date_1_offset_user == date_1_offset_data && date_2_offset_user != date_1_offset_data)
// Detect timezones that has not transitions
|| (!has_transitions && date_1_offset_data == date_1_offset_user)
)
{
tz = olson_name;
return tz;
}
}
}
/*
This script (Javascript Timezone Detection) detects Olson timezone
ID of user's system's timezone using getTimezoneOffset(). Detection
is tested and passed 100% in the following conditions:
* Windows 7,Opera 11.00
* Windows 7,Firefox 3.6.13
* Windows 7,Safari 5.0.3
* Windows 7,Google Chrome 8.0.552.237
* Windows 7,Internet Explorer 8.0.7600.16385
* Mac OS X,Google Chrome 8.0.552.237
* Mac OS X,Firefox 3.6.13
* Mac OS X,Opera 11.01
* Mac OS X,Safari Version 5.0.3
* Centos 5,Firefox 3.6.13
* Centos 5,Safari
* Centos 5,Opera 11.00
The script has ability to detect 90 timezones.
Every row in zones-array consist of
0: Olson timezone ID,
1-6: Transition start time in UTC (usually summer time start and sometimes winter time start)
7: Utc offset in minutes
8: 1 = has transition,0 = has not transition
Timezones are listed in zones-array this way:
- first comes section of timezones, that have transitions and then section of timezones that have no transitions
- Both sections are then ordered by offset
- Finally the has transitions section is ordered by the transition start time.
If you add more timezones or replaces some, please be sure to maintain this order, otherwise the detection fails in some cases.
Minified size: about 4.46KB
*/
var zones = new Array(
// FIRST DST TIMEZONES
[ 'Pacific/Apia', 2011,3,3,11,0,0, -660, 1 ]/* For Opera Linux. Unexpectedly winter-offset. */,
[ 'Pacific/Apia', 2010,8,26,11,0,0, -600, 1 ]/* STD: -660 */,
[ 'America/Adak', 2011,2,13,12,0,0, -540, 1 ]/* STD: -600 */,
[ 'America/Anchorage', 2011,2,13,11,0,0, -480, 1 ]/* STD: -540 */,
[ 'America/Los_Angeles', 2011,2,13,10,0,0, -420, 1 ]/* STD: -480 */,
[ 'America/Santa_Isabel', 2011,3,3,10,0,0, -420, 1 ]/* STD: -480 */,
[ 'America/Denver', 2011,2,13,9,0,0, -360, 1 ]/* STD: -420 */,
[ 'America/Mazatlan', 2011,3,3,9,0,0, -360, 1 ]/* STD: -420 */,
[ 'America/Chicago', 2011,2,13,8,0,0, -300, 1 ]/* STD: -360 */,
[ 'America/Mexico_City', 2011,3,3,8,0,0, -300, 1 ]/* STD: -360 */,
[ 'Pacific/Easter', 2011,9,9,4,0,0, -300, 1 ]/* STD: -360 */,
[ 'America/Havana', 2011,2,13,5,0,0, -240, 1 ]/* STD: -300 */,
[ 'America/New_York', 2011,2,13,7,0,0, -240, 1 ]/* STD: -300 */,
[ 'America/Goose_Bay', 2011,2,13,4,1,0, -180, 1 ]/* STD: -240 */,
[ 'America/Halifax', 2011,2,13,6,0,0, -180, 1 ]/* STD: -240 */,
[ 'Atlantic/Stanley', 2011,8,4,6,0,0, -180, 1 ]/* STD: -240 */,
[ 'America/Asuncion', 2011,9,2,4,0,0, -180, 1 ]/* STD: -240 */,
[ 'America/Santiago', 2011,9,9,4,0,0, -180, 1 ]/* STD: -240 */,
[ 'America/Campo_Grande', 2011,9,16,4,0,0, -180, 1 ]/* STD: -240 */,
[ 'America/St_Johns', 2011,2,13,3,31,0, -150, 1 ]/* STD: -210 */,
[ 'America/Miquelon', 2011,2,13,5,0,0, -120, 1 ]/* STD: -180 */,
[ 'America/Godthab', 2011,2,27,1,0,0, -120, 1 ]/* STD: -180 */,
[ 'America/Montevideo', 2011,9,2,5,0,0, -120, 1 ]/* STD: -180 */,
[ 'America/Sao_Paulo', 2011,9,16,3,0,0, -120, 1 ]/* STD: -180 */,
[ 'Atlantic/Azores', 2011,2,27,1,0,0, 0, 1 ]/* STD: -60 */,
[ 'Atlantic/Azores', 2010,2,28,3,0,0, 0, 1 ], /* Windows fix */
[ 'Europe/London', 2011,2,27,1,0,0, 60, 1 ]/* STD: 0 */,
[ 'Europe/Berlin', 2011,2,27,1,0,0, 120, 1 ]/* STD: 60 */,
[ 'Africa/Windhoek', 2011,8,4,1,0,0, 120, 1 ]/* STD: 60 */,
[ 'Asia/Gaza', 2011,2,25,22,1,0, 180, 1 ]/* STD: 120 */,
[ 'Asia/Beirut', 2011,2,26,22,0,0, 180, 1 ]/* STD: 120 */,
[ 'Europe/Minsk', 2011,2,27,0,0,0, 180, 1 ]/* STD: 120 */,
// Istanbul and Helsinki are the same, please select which one to use
// [ 'Europe/Istanbul', 2011,2,27,1,0,0, 180, 1 ]/* STD: 120 */,
[ 'Europe/Helsinki', 2011,2,27,1,0,0, 180, 1 ]/* STD: 120 */,
[ 'Asia/Jerusalem', 2011,3,1,0,0,0, 180, 1 ]/* STD: 120 */,
[ 'Africa/Cairo', 2011,3,28,22,0,0, 180, 1 ]/* STD: 120 */,
[ 'Asia/Damascus', 2011,9,27,21,0,0, 120, 1 ]/* Unexpectedly here winter-offset */,
[ 'Asia/Amman', 2011,9,27,22,0,0, 120, 1 ]/* Unexpectedly here winter-offset */,
[ 'Europe/Moscow', 2011,2,26,23,0,0, 240, 1 ]/* STD: 180 */,
[ 'Asia/Tehran', 2009,2,21,20,30,0, 270, 1 ]/* STD: 210 */,
[ 'Asia/Yerevan', 2011,2,26,22,0,0, 300, 1 ]/* STD: 240 */,
[ 'Asia/Baku', 2011,2,27,0,0,0, 300, 1 ]/* STD: 240 */,
[ 'Asia/Yekaterinburg', 2011,2,26,21,0,0, 360, 1 ]/* STD: 300 */,
[ 'Asia/Omsk', 2011,2,26,20,0,0, 420, 1 ]/* STD: 360 */,
[ 'Asia/Krasnoyarsk', 2011,2,26,19,0,0, 480, 1 ]/* STD: 420 */,
[ 'Asia/Irkutsk', 2011,2,26,18,0,0, 540, 1 ]/* STD: 480 */,
[ 'Asia/Yakutsk', 2011,2,26,17,0,0, 600, 1 ]/* STD: 540 */,
[ 'Australia/Adelaide', 2011,9,1,16,30,0, 630, 1 ]/* STD: 570 */,
[ 'Asia/Vladivostok', 2011,2,26,16,0,0, 660, 1 ]/* STD: 600 */,
[ 'Australia/Lord_Howe', 2011,9,1,15,30,0, 660, 1 ]/* STD: 630 */,
[ 'Australia/Sydney', 2011,9,1,16,0,0, 660, 1 ]/* STD: 600 */,
[ 'Pacific/Fiji', 2011,2,5,14,0,0, 720, 1 ]/* STD: 660 */,
[ 'Pacific/Fiji', 2011,2,26,14,0,0, 720, 1 ]/* STD: 660 */,
[ 'Asia/Kamchatka', 2011,2,26,15,0,0, 720, 1 ]/* STD: 660 */,
[ 'Pacific/Auckland', 2011,8,24,14,0,0, 780, 1 ]/* STD: 720 */,
[ 'Pacific/Chatham', 2011,8,24,14,0,0, 825, 1 ]/* STD: 765 */,
// AND THEN NON-DST TIMEZONES:
[ 'Etc/GMT+12', 2011,0,1,0,0,0, -720, 0 ]/* STD: -720 */,
[ 'Pacific/Pago_Pago', 2011,0,1,0,0,0, -660, 0 ]/* STD: -660 */,
[ 'Pacific/Kiritimati', 2010,0,1,0,0,0, 840, 0, '(LINT)' ], /* To prevent Firefox detecting Pacific/Kiritimati as Pacific Honolulu */
[ 'Pacific/Honolulu', 2011,0,1,0,0,0, -600, 0 ]/* STD: -600 */,
[ 'Pacific/Marquesas', 2011,0,1,0,0,0, -570, 0 ]/* STD: -570 */,
[ 'Pacific/Gambier', 2011,0,1,0,0,0, -540, 0 ]/* STD: -540 */,
[ 'Pacific/Pitcairn', 2011,0,1,0,0,0, -480, 0 ]/* STD: -480 */,
[ 'America/Phoenix', 2011,0,1,0,0,0, -420, 0 ]/* STD: -420 */,
[ 'America/Guatemala', 2011,0,1,0,0,0, -360, 0 ]/* STD: -360 */,
[ 'America/Bogota', 2011,0,1,0,0,0, -300, 0 ]/* STD: -300 */,
[ 'America/Caracas', 2011,0,1,0,0,0, -270, 0 ]/* STD: -270 */,
[ 'America/Santo_Domingo', 2011,0,1,0,0,0, -240, 0 ]/* STD: -240 */,
[ 'America/Argentina/Buenos_Aires', 2011,0,1,0,0,0, -180, 0 ]/* STD: -180 */,
[ 'America/Noronha', 2011,0,1,0,0,0, -120, 0 ]/* STD: -120 */,
[ 'Atlantic/Cape_Verde', 2011,0,1,0,0,0, -60, 0 ]/* STD: -60 */,
[ 'Africa/Casablanca', 2011,0,1,0,0,0, 0, 0 ]/* STD: 0 */,
[ 'Africa/Lagos', 2011,0,1,0,0,0, 60, 0 ]/* STD: 60 */,
[ 'Africa/Johannesburg', 2011,0,1,0,0,0, 120, 0 ]/* STD: 120 */,
[ 'Asia/Baghdad', 2011,0,1,0,0,0, 180, 0 ]/* STD: 180 */,
[ 'Asia/Dubai', 2011,0,1,0,0,0, 240, 0 ]/* STD: 240 */,
[ 'Asia/Kabul', 2011,0,1,0,0,0, 270, 0 ]/* STD: 270 */,
[ 'Asia/Karachi', 2011,0,1,0,0,0, 300, 0 ]/* STD: 300 */,
[ 'Asia/Kolkata', 2011,0,1,0,0,0, 330, 0 ]/* STD: 330 */,
[ 'Asia/Kathmandu', 2011,0,1,0,0,0, 345, 0 ]/* STD: 345 */,
[ 'Asia/Dhaka', 2011,0,1,0,0,0, 360, 0 ]/* STD: 360 */,
[ 'Asia/Rangoon', 2011,0,1,0,0,0, 390, 0 ]/* STD: 390 */,
[ 'Asia/Jakarta', 2011,0,1,0,0,0, 420, 0 ]/* STD: 420 */,
[ 'Asia/Shanghai', 2011,0,1,0,0,0, 480, 0 ]/* STD: 480 */,
[ 'Australia/Eucla', 2011,0,1,0,0,0, 525, 0 ]/* STD: 525 */,
[ 'Asia/Tokyo', 2011,0,1,0,0,0, 540, 0 ]/* STD: 540 */,
[ 'Australia/Darwin', 2011,0,1,0,0,0, 570, 0 ]/* STD: 570 */,
[ 'Australia/Brisbane', 2011,0,1,0,0,0, 600, 0 ]/* STD: 600 */,
[ 'Pacific/Noumea', 2011,0,1,0,0,0, 660, 0 ]/* STD: 660 */,
[ 'Pacific/Norfolk', 2011,0,1,0,0,0, 690, 0 ]/* STD: 690 */,
[ 'Pacific/Tarawa', 2011,0,1,0,0,0, 720, 0 ]/* STD: 720 */,
[ 'Pacific/Tongatapu', 2011,0,1,0,0,0, 780, 0 ]/* STD: 780 */,
[ 'Pacific/Kiritimati', 2011,0,1,0,0,0, 840, 0 ]/* STD: 840 */
)
function get_timezone_id()
{
var tz="";
for (var i in zones)
{
olson_name = zones[i][0];
has_transitions = zones[i][8];
date_1 = new Date(Date.UTC(zones[i][1],zones[i][2],zones[i][3],zones[i][4],zones[i][5],zones[i][6]));
date_1_offset_data = zones[i][7];
date_1_offset_user = -date_1.getTimezoneOffset();
date_2 = new Date(Date.UTC(zones[i][1],zones[i][2],zones[i][3],zones[i][4],zones[i][5],zones[i][6]) - 1000);
date_2_offset_user = -date_2.getTimezoneOffset();
var patt1=/\([^)]+\)/g;
if (zones[i][9] != undefined) var abbr = zones[i][9]; // To determine Pacific/Kiritimati in Firefox
else var abbr = "";
if
(
abbr == date_1.toString().match(patt1)
// Detect timezones that has transitions
|| (has_transitions && date_1_offset_user == date_1_offset_data && date_2_offset_user != date_1_offset_data)
// Detect timezones that has not transitions
|| (!has_transitions && date_1_offset_data == date_1_offset_user)
)
{
tz = olson_name;
return tz;
}
}
}