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msd2/phpBB3/phpbb/db/migration/data/v310/timezone.php
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194
msd2/phpBB3/phpbb/db/migration/data/v310/timezone.php
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<?php
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/**
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*
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* This file is part of the phpBB Forum Software package.
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*
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* @copyright (c) phpBB Limited <https://www.phpbb.com>
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* @license GNU General Public License, version 2 (GPL-2.0)
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*
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* For full copyright and license information, please see
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* the docs/CREDITS.txt file.
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*
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*/
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namespace phpbb\db\migration\data\v310;
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class timezone extends \phpbb\db\migration\migration
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{
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public function effectively_installed()
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{
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return !$this->db_tools->sql_column_exists($this->table_prefix . 'users', 'user_dst');
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}
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static public function depends_on()
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{
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return array('\phpbb\db\migration\data\v30x\release_3_0_11');
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}
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public function update_schema()
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{
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return array(
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'change_columns' => array(
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$this->table_prefix . 'users' => array(
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'user_timezone' => array('VCHAR:100', ''),
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),
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),
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);
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}
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public function update_data()
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{
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return array(
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array('custom', array(array($this, 'update_timezones'))),
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);
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}
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public function update_timezones($start)
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{
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$start = (int) $start;
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$limit = 500;
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$converted = 0;
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$update_blocks = array();
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$sql = 'SELECT user_id, user_timezone, user_dst
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FROM ' . $this->table_prefix . 'users
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ORDER BY user_id ASC';
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$result = $this->db->sql_query_limit($sql, $limit, $start);
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while ($row = $this->db->sql_fetchrow($result))
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{
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$converted++;
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// In case this is somehow run twice on a row.
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// Otherwise it would just end up as UTC on the second run
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if (is_numeric($row['user_timezone']))
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{
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$update_blocks[$row['user_timezone'] . ':' . $row['user_dst']][] = (int) $row['user_id'];
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}
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}
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$this->db->sql_freeresult($result);
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// Update blocks of users who share the same timezone/dst
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foreach ($update_blocks as $timezone => $user_ids)
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{
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$timezone = explode(':', $timezone);
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$converted_timezone = $this->convert_phpbb30_timezone($timezone[0], $timezone[1]);
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$sql = 'UPDATE ' . $this->table_prefix . "users
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SET user_timezone = '" . $this->db->sql_escape($converted_timezone) . "'
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WHERE " . $this->db->sql_in_set('user_id', $user_ids);
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$this->sql_query($sql);
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}
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if ($converted == $limit)
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{
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// There are still more to convert
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return $start + $limit;
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}
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// Update board default timezone
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$sql = 'UPDATE ' . $this->table_prefix . "config
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SET config_value = '" . $this->convert_phpbb30_timezone($this->config['board_timezone'], $this->config['board_dst']) . "'
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WHERE config_name = 'board_timezone'";
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$this->sql_query($sql);
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}
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/**
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* Determine the new timezone for a given phpBB 3.0 timezone and
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* "Daylight Saving Time" option
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*
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* @param $timezone float Users timezone in 3.0
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* @param $dst int Users daylight saving time
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* @return string Users new php Timezone which is used since 3.1
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*/
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public function convert_phpbb30_timezone($timezone, $dst)
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{
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$offset = (float) $timezone + (int) $dst;
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switch ($timezone)
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{
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case '-12':
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return 'Etc/GMT+' . abs($offset); //'[UTC - 12] Baker Island Time'
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case '-11':
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return 'Etc/GMT+' . abs($offset); //'[UTC - 11] Niue Time, Samoa Standard Time'
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case '-10':
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return 'Etc/GMT+' . abs($offset); //'[UTC - 10] Hawaii-Aleutian Standard Time, Cook Island Time'
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case '-9.5':
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return 'Pacific/Marquesas'; //'[UTC - 9:30] Marquesas Islands Time'
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case '-9':
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return 'Etc/GMT+' . abs($offset); //'[UTC - 9] Alaska Standard Time, Gambier Island Time'
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case '-8':
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return 'Etc/GMT+' . abs($offset); //'[UTC - 8] Pacific Standard Time'
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case '-7':
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return 'Etc/GMT+' . abs($offset); //'[UTC - 7] Mountain Standard Time'
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case '-6':
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return 'Etc/GMT+' . abs($offset); //'[UTC - 6] Central Standard Time'
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case '-5':
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return 'Etc/GMT+' . abs($offset); //'[UTC - 5] Eastern Standard Time'
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case '-4.5':
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return 'America/Caracas'; //'[UTC - 4:30] Venezuelan Standard Time'
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case '-4':
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return 'Etc/GMT+' . abs($offset); //'[UTC - 4] Atlantic Standard Time'
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case '-3.5':
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return 'America/St_Johns'; //'[UTC - 3:30] Newfoundland Standard Time'
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case '-3':
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return 'Etc/GMT+' . abs($offset); //'[UTC - 3] Amazon Standard Time, Central Greenland Time'
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case '-2':
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return 'Etc/GMT+' . abs($offset); //'[UTC - 2] Fernando de Noronha Time, South Georgia & the South Sandwich Islands Time'
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case '-1':
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return 'Etc/GMT+' . abs($offset); //'[UTC - 1] Azores Standard Time, Cape Verde Time, Eastern Greenland Time'
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case '0':
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return (!$dst) ? 'UTC' : 'Etc/GMT-1'; //'[UTC] Western European Time, Greenwich Mean Time'
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case '1':
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return 'Etc/GMT-' . $offset; //'[UTC + 1] Central European Time, West African Time'
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case '2':
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return 'Etc/GMT-' . $offset; //'[UTC + 2] Eastern European Time, Central African Time'
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case '3':
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return 'Etc/GMT-' . $offset; //'[UTC + 3] Moscow Standard Time, Eastern African Time'
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case '3.5':
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return 'Asia/Tehran'; //'[UTC + 3:30] Iran Standard Time'
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case '4':
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return 'Etc/GMT-' . $offset; //'[UTC + 4] Gulf Standard Time, Samara Standard Time'
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case '4.5':
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return 'Asia/Kabul'; //'[UTC + 4:30] Afghanistan Time'
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case '5':
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return 'Etc/GMT-' . $offset; //'[UTC + 5] Pakistan Standard Time, Yekaterinburg Standard Time'
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case '5.5':
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return 'Asia/Kolkata'; //'[UTC + 5:30] Indian Standard Time, Sri Lanka Time'
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case '5.75':
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return 'Asia/Kathmandu'; //'[UTC + 5:45] Nepal Time'
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case '6':
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return 'Etc/GMT-' . $offset; //'[UTC + 6] Bangladesh Time, Bhutan Time, Novosibirsk Standard Time'
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case '6.5':
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return 'Indian/Cocos'; //'[UTC + 6:30] Cocos Islands Time, Myanmar Time'
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case '7':
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return 'Etc/GMT-' . $offset; //'[UTC + 7] Indochina Time, Krasnoyarsk Standard Time'
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case '8':
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return 'Etc/GMT-' . $offset; //'[UTC + 8] Chinese Standard Time, Australian Western Standard Time, Irkutsk Standard Time'
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case '8.75':
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return 'Australia/Eucla'; //'[UTC + 8:45] Southeastern Western Australia Standard Time'
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case '9':
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return 'Etc/GMT-' . $offset; //'[UTC + 9] Japan Standard Time, Korea Standard Time, Chita Standard Time'
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case '9.5':
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return 'Australia/ACT'; //'[UTC + 9:30] Australian Central Standard Time'
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case '10':
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return 'Etc/GMT-' . $offset; //'[UTC + 10] Australian Eastern Standard Time, Vladivostok Standard Time'
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case '10.5':
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return 'Australia/Lord_Howe'; //'[UTC + 10:30] Lord Howe Standard Time'
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case '11':
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return 'Etc/GMT-' . $offset; //'[UTC + 11] Solomon Island Time, Magadan Standard Time'
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case '11.5':
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return 'Pacific/Norfolk'; //'[UTC + 11:30] Norfolk Island Time'
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case '12':
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return 'Etc/GMT-12'; //'[UTC + 12] New Zealand Time, Fiji Time, Kamchatka Standard Time'
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case '12.75':
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return 'Pacific/Chatham'; //'[UTC + 12:45] Chatham Islands Time'
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case '13':
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return 'Pacific/Tongatapu'; //'[UTC + 13] Tonga Time, Phoenix Islands Time'
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case '14':
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return 'Pacific/Kiritimati'; //'[UTC + 14] Line Island Time'
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default:
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return 'UTC';
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}
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}
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}
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