jstz.js
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	(function (root) {/global exports, Intl/
	/**
	* This script gives you the zone info key representing your device's time zone setting.
	*
	* @name jsTimezoneDetect
	* @version 1.0.5
	* @author Jon Nylander
	* @license MIT License - https://bitbucket.org/pellepim/jstimezonedetect/src/default/LICENCE.txt
	*
	* For usage and examples, visit:
	* http://pellepim.bitbucket.org/jstz/
	*
	* Copyright (c) Jon Nylander
	*/


	/**
	* Namespace to hold all the code for timezone detection.
	*/
	var jstz = (function () {
	'use strict';
	var HEMISPHERE_SOUTH = 's',

	consts = {
	DAY: 86400000,
	HOUR: 3600000,
	MINUTE: 60000,
	SECOND: 1000,
	BASELINE_YEAR: 2014,
	MAX_SCORE: 864000000, // 10 days
	AMBIGUITIES: {
	'America/Denver': ['America/Mazatlan'],
	'America/Chicago': ['America/Mexico_City'],
	'America/Santiago': ['America/Asuncion', 'America/Campo_Grande'],
	'America/Montevideo': ['America/Sao_Paulo'],
	// Europe/Minsk should not be in this list... but Windows.
	'Asia/Beirut': ['Asia/Amman', 'Asia/Jerusalem', 'Europe/Helsinki', 'Asia/Damascus', 'Africa/Cairo', 'Asia/Gaza', 'Europe/Minsk'],
	'Pacific/Auckland': ['Pacific/Fiji'],
	'America/Los_Angeles': ['America/Santa_Isabel'],
	'America/New_York': ['America/Havana'],
	'America/Halifax': ['America/Goose_Bay'],
	'America/Godthab': ['America/Miquelon'],
	'Asia/Dubai': ['Asia/Yerevan'],
	'Asia/Jakarta': ['Asia/Krasnoyarsk'],
	'Asia/Shanghai': ['Asia/Irkutsk', 'Australia/Perth'],
	'Australia/Sydney': ['Australia/Lord_Howe'],
	'Asia/Tokyo': ['Asia/Yakutsk'],
	'Asia/Dhaka': ['Asia/Omsk'],
	// In the real world Yerevan is not ambigous for Baku... but Windows.
	'Asia/Baku': ['Asia/Yerevan'],
	'Australia/Brisbane': ['Asia/Vladivostok'],
	'Pacific/Noumea': ['Asia/Vladivostok'],
	'Pacific/Majuro': ['Asia/Kamchatka', 'Pacific/Fiji'],
	'Pacific/Tongatapu': ['Pacific/Apia'],
	'Asia/Baghdad': ['Europe/Minsk', 'Europe/Moscow'],
	'Asia/Karachi': ['Asia/Yekaterinburg'],
	'Africa/Johannesburg': ['Asia/Gaza', 'Africa/Cairo']
	}
	},

	/**
	* Gets the offset in minutes from UTC for a certain date.
	* @param {Date} date
	* @returns {Number}
	*/
	get_date_offset = function get_date_offset(date) {
	var offset = -date.getTimezoneOffset();
	return (offset !== null ? offset : 0);
	},

	/**
	* This function does some basic calculations to create information about
	* the user's timezone. It uses REFERENCE_YEAR as a solid year for which
	* the script has been tested rather than depend on the year set by the
	* client device.
	*
	* Returns a key that can be used to do lookups in jstz.olson.timezones.
	* eg: "720,1,2".
	*
	* @returns {String}
	*/
	lookup_key = function lookup_key() {
	var january_offset = get_date_offset(new Date(consts.BASELINE_YEAR, 0, 2)),
	june_offset = get_date_offset(new Date(consts.BASELINE_YEAR, 5, 2)),
	diff = january_offset - june_offset;

	if (diff < 0) {
	return january_offset + ",1";
	} else if (diff > 0) {
	return june_offset + ",1," + HEMISPHERE_SOUTH;
	}

	return january_offset + ",0";
	},


	/**
	* Tries to get the time zone key directly from the operating system for those
	* environments that support the ECMAScript Internationalization API.
	*/
	get_from_internationalization_api = function get_from_internationalization_api() {
	if (typeof Intl === "undefined" \|\| typeof Intl.DateTimeFormat === "undefined") {
	return;
	}
	var format = Intl.DateTimeFormat();
	if (typeof format === "undefined" \|\| typeof format.resolvedOptions === "undefined") {
	return;
	}
	return format.resolvedOptions().timeZone;
	},

	/**
	* Starting point for getting all the DST rules for a specific year
	* for the current timezone (as described by the client system).
	*
	* Returns an object with start and end attributes, or false if no
	* DST rules were found for the year.
	*
	* @param year
	* @returns {Object} \|\| {Boolean}
	*/
	dst_dates = function dst_dates(year) {
	var yearstart = new Date(year, 0, 1, 0, 0, 1, 0).getTime();
	var yearend = new Date(year, 12, 31, 23, 59, 59).getTime();
	var current = yearstart;
	var offset = (new Date(current)).getTimezoneOffset();
	var dst_start = null;
	var dst_end = null;

	while (current < yearend - 86400000) {
	var dateToCheck = new Date(current);
	var dateToCheckOffset = dateToCheck.getTimezoneOffset();

	if (dateToCheckOffset !== offset) {
	if (dateToCheckOffset < offset) {
	dst_start = dateToCheck;
	}
	if (dateToCheckOffset > offset) {
	dst_end = dateToCheck;
	}
	offset = dateToCheckOffset;
	}

	current += 86400000;
	}

	if (dst_start && dst_end) {
	return {
	s: find_dst_fold(dst_start).getTime(),
	e: find_dst_fold(dst_end).getTime()
	};
	}

	return false;
	},

	/**
	* Probably completely unnecessary function that recursively finds the
	* exact (to the second) time when a DST rule was changed.
	*
	* @param a_date - The candidate Date.
	* @param padding - integer specifying the padding to allow around the candidate
	* date for finding the fold.
	* @param iterator - integer specifying how many milliseconds to iterate while
	* searching for the fold.
	*
	* @returns {Date}
	*/
	find_dst_fold = function find_dst_fold(a_date, padding, iterator) {
	if (typeof padding === 'undefined') {
	padding = consts.DAY;
	iterator = consts.HOUR;
	}

	var date_start = new Date(a_date.getTime() - padding).getTime();
	var date_end = a_date.getTime() + padding;
	var offset = new Date(date_start).getTimezoneOffset();

	var current = date_start;

	var dst_change = null;
	while (current < date_end - iterator) {
	var dateToCheck = new Date(current);
	var dateToCheckOffset = dateToCheck.getTimezoneOffset();

	if (dateToCheckOffset !== offset) {
	dst_change = dateToCheck;
	break;
	}
	current += iterator;
	}

	if (padding === consts.DAY) {
	return find_dst_fold(dst_change, consts.HOUR, consts.MINUTE);
	}

	if (padding === consts.HOUR) {
	return find_dst_fold(dst_change, consts.MINUTE, consts.SECOND);
	}

	return dst_change;
	},

	windows7_adaptations = function windows7_adaptions(rule_list, preliminary_timezone, score, sample) {
	if (score !== 'N/A') {
	return score;
	}
	if (preliminary_timezone === 'Asia/Beirut') {
	if (sample.name === 'Africa/Cairo') {
	if (rule_list[6].s === 1398376800000 && rule_list[6].e === 1411678800000) {
	return 0;
	}
	}
	if (sample.name === 'Asia/Jerusalem') {
	if (rule_list[6].s === 1395964800000 && rule_list[6].e === 1411858800000) {
	return 0;
	}
	}
	} else if (preliminary_timezone === 'America/Santiago') {
	if (sample.name === 'America/Asuncion') {
	if (rule_list[6].s === 1412481600000 && rule_list[6].e === 1397358000000) {
	return 0;
	}
	}
	if (sample.name === 'America/Campo_Grande') {
	if (rule_list[6].s === 1413691200000 && rule_list[6].e === 1392519600000) {
	return 0;
	}
	}
	} else if (preliminary_timezone === 'America/Montevideo') {
	if (sample.name === 'America/Sao_Paulo') {
	if (rule_list[6].s === 1413687600000 && rule_list[6].e === 1392516000000) {
	return 0;
	}
	}
	} else if (preliminary_timezone === 'Pacific/Auckland') {
	if (sample.name === 'Pacific/Fiji') {
	if (rule_list[6].s === 1414245600000 && rule_list[6].e === 1396101600000) {
	return 0;
	}
	}
	}

	return score;
	},

	/**
	* Takes the DST rules for the current timezone, and proceeds to find matches
	* in the jstz.olson.dst_rules.zones array.
	*
	* Compares samples to the current timezone on a scoring basis.
	*
	* Candidates are ruled immediately if either the candidate or the current zone
	* has a DST rule where the other does not.
	*
	* Candidates are ruled out immediately if the current zone has a rule that is
	* outside the DST scope of the candidate.
	*
	* Candidates are included for scoring if the current zones rules fall within the
	* span of the samples rules.
	*
	* Low score is best, the score is calculated by summing up the differences in DST
	* rules and if the consts.MAX_SCORE is overreached the candidate is ruled out.
	*
	* Yah follow? :)
	*
	* @param rule_list
	* @param preliminary_timezone
	* @returns {*}
	*/
	best_dst_match = function best_dst_match(rule_list, preliminary_timezone) {
	var score_sample = function score_sample(sample) {
	var score = 0;

	for (var j = 0; j < rule_list.length; j++) {

	// Both sample and current time zone report DST during the year.
	if (!!sample.rules[j] && !!rule_list[j]) {

	// The current time zone's DST rules are inside the sample's. Include.
	if (rule_list[j].s >= sample.rules[j].s && rule_list[j].e <= sample.rules[j].e) {
	score = 0;
	score += Math.abs(rule_list[j].s - sample.rules[j].s);
	score += Math.abs(sample.rules[j].e - rule_list[j].e);

	// The current time zone's DST rules are outside the sample's. Discard.
	} else {
	score = 'N/A';
	break;
	}

	// The max score has been reached. Discard.
	if (score > consts.MAX_SCORE) {
	score = 'N/A';
	break;
	}
	}
	}

	score = windows7_adaptations(rule_list, preliminary_timezone, score, sample);

	return score;
	};
	var scoreboard = {};
	var dst_zones = jstz.olson.dst_rules.zones;
	var dst_zones_length = dst_zones.length;
	var ambiguities = consts.AMBIGUITIES[preliminary_timezone];

	for (var i = 0; i < dst_zones_length; i++) {
	var sample = dst_zones[i];
	var score = score_sample(dst_zones[i]);

	if (score !== 'N/A') {
	scoreboard[sample.name] = score;
	}
	}

	for (var tz in scoreboard) {
	if (scoreboard.hasOwnProperty(tz)) {
	if (ambiguities.indexOf(tz) != -1) {
	return tz;
	}
	}
	}

	return preliminary_timezone;
	},

	/**
	* Takes the preliminary_timezone as detected by lookup_key().
	*
	* Builds up the current timezones DST rules for the years defined
	* in the jstz.olson.dst_rules.years array.
	*
	* If there are no DST occurences for those years, immediately returns
	* the preliminary timezone. Otherwise proceeds and tries to solve
	* ambiguities.
	*
	* @param preliminary_timezone
	* @returns {String} timezone_name
	*/
	get_by_dst = function get_by_dst(preliminary_timezone) {
	var get_rules = function get_rules() {
	var rule_list = [];
	for (var i = 0; i < jstz.olson.dst_rules.years.length; i++) {
	var year_rules = dst_dates(jstz.olson.dst_rules.years[i]);
	rule_list.push(year_rules);
	}
	return rule_list;
	};
	var check_has_dst = function check_has_dst(rules) {
	for (var i = 0; i < rules.length; i++) {
	if (rules[i] !== false) {
	return true;
	}
	}
	return false;
	};
	var rules = get_rules();
	var has_dst = check_has_dst(rules);

	if (has_dst) {
	return best_dst_match(rules, preliminary_timezone);
	}

	return preliminary_timezone;
	},

	/**
	* Uses get_timezone_info() to formulate a key to use in the olson.timezones dictionary.
	*
	* Returns an object with one function ".name()"
	*
	* @returns Object
	*/
	determine = function determine() {
	var preliminary_tz = get_from_internationalization_api();

	if (!preliminary_tz) {
	preliminary_tz = jstz.olson.timezones[lookup_key()];

	if (typeof consts.AMBIGUITIES[preliminary_tz] !== 'undefined') {
	preliminary_tz = get_by_dst(preliminary_tz);
	}
	}

	return {
	name: function () {
	return preliminary_tz;
	}
	};
	};

	return {
	determine: determine
	};
	}());


	jstz.olson = jstz.olson \|\| {};

	/**
	* The keys in this dictionary are comma separated as such:
	*
	* First the offset compared to UTC time in minutes.
	*
	* Then a flag which is 0 if the timezone does not take daylight savings into account and 1 if it
	* does.
	*
	* Thirdly an optional 's' signifies that the timezone is in the southern hemisphere,
	* only interesting for timezones with DST.
	*
	* The mapped arrays is used for constructing the jstz.TimeZone object from within
	* jstz.determine();
	*/
	jstz.olson.timezones = {
	'-720,0': 'Etc/GMT+12',
	'-660,0': 'Pacific/Pago_Pago',
	'-660,1,s': 'Pacific/Apia', // Why? Because windows... cry!
	'-600,1': 'America/Adak',
	'-600,0': 'Pacific/Honolulu',
	'-570,0': 'Pacific/Marquesas',
	'-540,0': 'Pacific/Gambier',
	'-540,1': 'America/Anchorage',
	'-480,1': 'America/Los_Angeles',
	'-480,0': 'Pacific/Pitcairn',
	'-420,0': 'America/Phoenix',
	'-420,1': 'America/Denver',
	'-360,0': 'America/Guatemala',
	'-360,1': 'America/Chicago',
	'-360,1,s': 'Pacific/Easter',
	'-300,0': 'America/Bogota',
	'-300,1': 'America/New_York',
	'-270,0': 'America/Caracas',
	'-240,1': 'America/Halifax',
	'-240,0': 'America/Santo_Domingo',
	'-240,1,s': 'America/Santiago',
	'-210,1': 'America/St_Johns',
	'-180,1': 'America/Godthab',
	'-180,0': 'America/Argentina/Buenos_Aires',
	'-180,1,s': 'America/Montevideo',
	'-120,0': 'America/Noronha',
	'-120,1': 'America/Noronha',
	'-60,1': 'Atlantic/Azores',
	'-60,0': 'Atlantic/Cape_Verde',
	'0,0': 'UTC',
	'0,1': 'Europe/London',
	'60,1': 'Europe/Berlin',
	'60,0': 'Africa/Lagos',
	'60,1,s': 'Africa/Windhoek',
	'120,1': 'Asia/Beirut',
	'120,0': 'Africa/Johannesburg',
	'180,0': 'Asia/Baghdad',
	'180,1': 'Europe/Moscow',
	'210,1': 'Asia/Tehran',
	'240,0': 'Asia/Dubai',
	'240,1': 'Asia/Baku',
	'270,0': 'Asia/Kabul',
	'300,1': 'Asia/Yekaterinburg',
	'300,0': 'Asia/Karachi',
	'330,0': 'Asia/Kolkata',
	'345,0': 'Asia/Kathmandu',
	'360,0': 'Asia/Dhaka',
	'360,1': 'Asia/Omsk',
	'390,0': 'Asia/Rangoon',
	'420,1': 'Asia/Krasnoyarsk',
	'420,0': 'Asia/Jakarta',
	'480,0': 'Asia/Shanghai',
	'480,1': 'Asia/Irkutsk',
	'525,0': 'Australia/Eucla',
	'525,1,s': 'Australia/Eucla',
	'540,1': 'Asia/Yakutsk',
	'540,0': 'Asia/Tokyo',
	'570,0': 'Australia/Darwin',
	'570,1,s': 'Australia/Adelaide',
	'600,0': 'Australia/Brisbane',
	'600,1': 'Asia/Vladivostok',
	'600,1,s': 'Australia/Sydney',
	'630,1,s': 'Australia/Lord_Howe',
	'660,1': 'Asia/Kamchatka',
	'660,0': 'Pacific/Noumea',
	'690,0': 'Pacific/Norfolk',
	'720,1,s': 'Pacific/Auckland',
	'720,0': 'Pacific/Majuro',
	'765,1,s': 'Pacific/Chatham',
	'780,0': 'Pacific/Tongatapu',
	'780,1,s': 'Pacific/Apia',
	'840,0': 'Pacific/Kiritimati'
	};

	/* Build time: 2014-11-28 11:10:50Z Build by invoking python utilities/dst.py generate */
	jstz.olson.dst_rules = {
	"years": [
	2008,
	2009,
	2010,
	2011,
	2012,
	2013,
	2014
	],
	"zones": [
	{
	"name": "Africa/Cairo",
	"rules": [
	{
	"e": 1219957200000,
	"s": 1209074400000
	},
	{
	"e": 1250802000000,
	"s": 1240524000000
	},
	{
	"e": 1285880400000,
	"s": 1284069600000
	},
	false,
	false,
	false,
	{
	"e": 1411678800000,
	"s": 1406844000000
	}
	]
	},
	{
	"name": "America/Asuncion",
	"rules": [
	{
	"e": 1205031600000,
	"s": 1224388800000
	},
	{
	"e": 1236481200000,
	"s": 1255838400000
	},
	{
	"e": 1270954800000,
	"s": 1286078400000
	},
	{
	"e": 1302404400000,
	"s": 1317528000000
	},
	{
	"e": 1333854000000,
	"s": 1349582400000
	},
	{
	"e": 1364094000000,
	"s": 1381032000000
	},
	{
	"e": 1395543600000,
	"s": 1412481600000
	}
	]
	},
	{
	"name": "America/Campo_Grande",
	"rules": [
	{
	"e": 1203217200000,
	"s": 1224388800000
	},
	{
	"e": 1234666800000,
	"s": 1255838400000
	},
	{
	"e": 1266721200000,
	"s": 1287288000000
	},
	{
	"e": 1298170800000,
	"s": 1318737600000
	},
	{
	"e": 1330225200000,
	"s": 1350792000000
	},
	{
	"e": 1361070000000,
	"s": 1382241600000
	},
	{
	"e": 1392519600000,
	"s": 1413691200000
	}
	]
	},
	{
	"name": "America/Goose_Bay",
	"rules": [
	{
	"e": 1225594860000,
	"s": 1205035260000
	},
	{
	"e": 1257044460000,
	"s": 1236484860000
	},
	{
	"e": 1289098860000,
	"s": 1268539260000
	},
	{
	"e": 1320555600000,
	"s": 1299988860000
	},
	{
	"e": 1352005200000,
	"s": 1331445600000
	},
	{
	"e": 1383454800000,
	"s": 1362895200000
	},
	{
	"e": 1414904400000,
	"s": 1394344800000
	}
	]
	},
	{
	"name": "America/Havana",
	"rules": [
	{
	"e": 1224997200000,
	"s": 1205643600000
	},
	{
	"e": 1256446800000,
	"s": 1236488400000
	},
	{
	"e": 1288501200000,
	"s": 1268542800000
	},
	{
	"e": 1321160400000,
	"s": 1300597200000
	},
	{
	"e": 1352005200000,
	"s": 1333256400000
	},
	{
	"e": 1383454800000,
	"s": 1362891600000
	},
	{
	"e": 1414904400000,
	"s": 1394341200000
	}
	]
	},
	{
	"name": "America/Mazatlan",
	"rules": [
	{
	"e": 1225008000000,
	"s": 1207472400000
	},
	{
	"e": 1256457600000,
	"s": 1238922000000
	},
	{
	"e": 1288512000000,
	"s": 1270371600000
	},
	{
	"e": 1319961600000,
	"s": 1301821200000
	},
	{
	"e": 1351411200000,
	"s": 1333270800000
	},
	{
	"e": 1382860800000,
	"s": 1365325200000
	},
	{
	"e": 1414310400000,
	"s": 1396774800000
	}
	]
	},
	{
	"name": "America/Mexico_City",
	"rules": [
	{
	"e": 1225004400000,
	"s": 1207468800000
	},
	{
	"e": 1256454000000,
	"s": 1238918400000
	},
	{
	"e": 1288508400000,
	"s": 1270368000000
	},
	{
	"e": 1319958000000,
	"s": 1301817600000
	},
	{
	"e": 1351407600000,
	"s": 1333267200000
	},
	{
	"e": 1382857200000,
	"s": 1365321600000
	},
	{
	"e": 1414306800000,
	"s": 1396771200000
	}
	]
	},
	{
	"name": "America/Miquelon",
	"rules": [
	{
	"e": 1225598400000,
	"s": 1205038800000
	},
	{
	"e": 1257048000000,
	"s": 1236488400000
	},
	{
	"e": 1289102400000,
	"s": 1268542800000
	},
	{
	"e": 1320552000000,
	"s": 1299992400000
	},
	{
	"e": 1352001600000,
	"s": 1331442000000
	},
	{
	"e": 1383451200000,
	"s": 1362891600000
	},
	{
	"e": 1414900800000,
	"s": 1394341200000
	}
	]
	},
	{
	"name": "America/Santa_Isabel",
	"rules": [
	{
	"e": 1225011600000,
	"s": 1207476000000
	},
	{
	"e": 1256461200000,
	"s": 1238925600000
	},
	{
	"e": 1288515600000,
	"s": 1270375200000
	},
	{
	"e": 1319965200000,
	"s": 1301824800000
	},
	{
	"e": 1351414800000,
	"s": 1333274400000
	},
	{
	"e": 1382864400000,
	"s": 1365328800000
	},
	{
	"e": 1414314000000,
	"s": 1396778400000
	}
	]
	},
	{
	"name": "America/Sao_Paulo",
	"rules": [
	{
	"e": 1203213600000,
	"s": 1224385200000
	},
	{
	"e": 1234663200000,
	"s": 1255834800000
	},
	{
	"e": 1266717600000,
	"s": 1287284400000
	},
	{
	"e": 1298167200000,
	"s": 1318734000000
	},
	{
	"e": 1330221600000,
	"s": 1350788400000
	},
	{
	"e": 1361066400000,
	"s": 1382238000000
	},
	{
	"e": 1392516000000,
	"s": 1413687600000
	}
	]
	},
	{
	"name": "Asia/Amman",
	"rules": [
	{
	"e": 1225404000000,
	"s": 1206655200000
	},
	{
	"e": 1256853600000,
	"s": 1238104800000
	},
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