js output:
Daylight Saving time according to detect_timezone.js : UTC offset - according to detect_timezone.js: (-12:00) International Date Line West (-11:00) Midway Island, Samoa (-10:00) Hawaii (-09:00) Alaska (-08:00) Pacific Time (US & Canada) (-07:00) Arizona (-07:00) Mountain Time (US & Canada) (-06:00) Central America, Saskatchewan (-06:00) Central Time (US & Canada), Guadalajara, Mexico city (-05:00) Indiana, Bogota, Lima, Quito, Rio Branco (-05:00) Eastern time (US & Canada) (-04:00) Atlantic time (Canada), Manaus, Santiago (-04:00) Caracas, La Paz (-03:30) Newfoundland (-03:00) Greenland, Brasilia, Montevideo (-03:00) Buenos Aires, Georgetown (-02:00) Mid-Atlantic (-01:00) Azores (-01:00) Cape Verde Is. (00:00) Casablanca, Monrovia, Reykjavik (00:00) GMT: Dublin, Edinburgh, Lisbon, London (+01:00) Amsterdam, Berlin, Rome, Vienna, Prague, Brussels (+01:00) West Central Africa (+02:00) Amman, Athens, Istanbul, Beirut, Cairo, Jerusalem (+02:00) Harare, Pretoria (+03:00) Baghdad, Moscow, St. Petersburg, Volgograd (+03:00) Kuwait, Riyadh, Nairobi, Tbilisi (+03:30) Tehran (+04:00) Abu Dhadi, Muscat (+04:00) Baku, Yerevan (+04:30) Kabul (+05:00) Ekaterinburg (+05:00) Islamabad, Karachi, Tashkent (+05:30) Chennai, Kolkata, Mumbai, New Delhi, Sri Jayawardenepura (+05:45) Kathmandu (+06:00) Astana, Dhaka (+06:00) Almaty, Nonosibirsk (+06:30) Yangon (Rangoon) (+07:00) Krasnoyarsk (+07:00) Bangkok, Hanoi, Jakarta (+08:00) Beijing, Hong Kong, Singapore, Taipei (+08:00) Irkutsk, Ulaan Bataar, Perth (+09:00) Yakutsk (+09:00) Seoul, Osaka, Sapporo, Tokyo (+09:30) Darwin (+09:30) Adelaide (+10:00) Brisbane, Guam, Port Moresby (+10:00) Canberra, Melbourne, Sydney, Hobart, Vladivostok (+11:00) Magadan, Solomon Is., New Caledonia (+12:00) Auckland, Wellington (+12:00) Fiji, Kamchatka, Marshall Is. (+13:00) Nuku'alofa