NTP - xoseperez/espurna GitHub Wiki
NTP
🔴 NOTICE Current version will not correctly parse TZ strings starting with: "<[+-]?[0-9]+>"
For more information, see https://github.com/esp8266/Arduino/issues/7690 and https://github.com/esp8266/Arduino/pull/7702
Configuration
| Configuration key | Build flag | Description |
|---|---|---|
ntpServer |
NTP_SERVER |
(default: pool.ntp.org) |
ntpTZ |
NTP_TIMEZONE(default: TZ_Etc_UTC, definition value from esp8266/Arduino:cores/esp8266/TZ.h) |
(default: UTC0)See Values in the table below |
ntpDhcp |
NTP_DHCP_SERVER |
(default: 1, enabled) Automatically replace the NTP server value with the one received with the DHCP packet |
ntpStartDelay |
NTP_START_DELAY (seconds) |
(default: 3 seconds) NTP initial update delay after network connection |
ntpUpdateIntvl |
NTP_UPDATE_INTERVAL |
(default: 1800 seconds / 30 minutes) NTP update interval after an initial sync |
NTP_SUPPORT(default: 1, enabled) |
Build with NTP support |
TZ Variable
| Name | Value |
|---|---|
| GMT | UTC0 |
| GMT+0 | UTC0 |
| GMT-0 | UTC0 |
| GMT0 | UTC0 |
| Greenwich | UTC0 |
| UCT | UTC0 |
| UTC | UTC0 |
| Universal | UTC0 |
| Zulu | UTC0 |
| Africa/Abidjan | GMT0 |
| Africa/Accra | GMT0 |
| Africa/Addis_Ababa | EAT-3 |
| Africa/Algiers | CET-1 |
| Africa/Asmara | EAT-3 |
| Africa/Asmera | EAT-3 |
| Africa/Bamako | GMT0 |
| Africa/Bangui | WAT-1 |
| Africa/Banjul | GMT0 |
| Africa/Bissau | GMT0 |
| Africa/Blantyre | CAT-2 |
| Africa/Brazzaville | WAT-1 |
| Africa/Bujumbura | CAT-2 |
| Africa/Cairo | EET-2EEST,M4.5.5/0,M10.5.4/24 |
| Africa/Casablanca | UNK-1 |
| Africa/Ceuta | CET-1CEST,M3.5.0,M10.5.0/3 |
| Africa/Conakry | GMT0 |
| Africa/Dakar | GMT0 |
| Africa/Dar_es_Salaam | EAT-3 |
| Africa/Djibouti | EAT-3 |
| Africa/Douala | WAT-1 |
| Africa/El_Aaiun | UNK-1 |
| Africa/Freetown | GMT0 |
| Africa/Gaborone | CAT-2 |
| Africa/Harare | CAT-2 |
| Africa/Johannesburg | SAST-2 |
| Africa/Juba | CAT-2 |
| Africa/Kampala | EAT-3 |
| Africa/Khartoum | CAT-2 |
| Africa/Kigali | CAT-2 |
| Africa/Kinshasa | WAT-1 |
| Africa/Lagos | WAT-1 |
| Africa/Libreville | WAT-1 |
| Africa/Lome | GMT0 |
| Africa/Luanda | WAT-1 |
| Africa/Lubumbashi | CAT-2 |
| Africa/Lusaka | CAT-2 |
| Africa/Malabo | WAT-1 |
| Africa/Maputo | CAT-2 |
| Africa/Maseru | SAST-2 |
| Africa/Mbabane | SAST-2 |
| Africa/Mogadishu | EAT-3 |
| Africa/Monrovia | GMT0 |
| Africa/Nairobi | EAT-3 |
| Africa/Ndjamena | WAT-1 |
| Africa/Niamey | WAT-1 |
| Africa/Nouakchott | GMT0 |
| Africa/Ouagadougou | GMT0 |
| Africa/Porto-Novo | WAT-1 |
| Africa/Sao_Tome | GMT0 |
| Africa/Timbuktu | GMT0 |
| Africa/Tripoli | EET-2 |
| Africa/Tunis | CET-1 |
| Africa/Windhoek | CAT-2 |
| America/Adak | HST10HDT,M3.2.0,M11.1.0 |
| America/Anchorage | AKST9AKDT,M3.2.0,M11.1.0 |
| America/Anguilla | AST4 |
| America/Antigua | AST4 |
| America/Araguaina | UNK3 |
| America/Argentina/Buenos_Aires | UNK3 |
| America/Argentina/Catamarca | UNK3 |
| America/Argentina/ComodRivadavia | UNK3 |
| America/Argentina/Cordoba | UNK3 |
| America/Argentina/Jujuy | UNK3 |
| America/Argentina/La_Rioja | UNK3 |
| America/Argentina/Mendoza | UNK3 |
| America/Argentina/Rio_Gallegos | UNK3 |
| America/Argentina/Salta | UNK3 |
| America/Argentina/San_Juan | UNK3 |
| America/Argentina/San_Luis | UNK3 |
| America/Argentina/Tucuman | UNK3 |
| America/Argentina/Ushuaia | UNK3 |
| America/Aruba | AST4 |
| America/Asuncion | UNK4UNK,M10.1.0/0,M3.4.0/0 |
| America/Atikokan | EST5 |
| America/Atka | HST10HDT,M3.2.0,M11.1.0 |
| America/Bahia | UNK3 |
| America/Bahia_Banderas | CST6 |
| America/Barbados | AST4 |
| America/Belem | UNK3 |
| America/Belize | CST6 |
| America/Blanc-Sablon | AST4 |
| America/Boa_Vista | UNK4 |
| America/Bogota | UNK5 |
| America/Boise | MST7MDT,M3.2.0,M11.1.0 |
| America/Buenos_Aires | UNK3 |
| America/Cambridge_Bay | MST7MDT,M3.2.0,M11.1.0 |
| America/Campo_Grande | UNK4 |
| America/Cancun | EST5 |
| America/Caracas | UNK4 |
| America/Catamarca | UNK3 |
| America/Cayenne | UNK3 |
| America/Cayman | EST5 |
| America/Chicago | CST6CDT,M3.2.0,M11.1.0 |
| America/Chihuahua | CST6 |
| America/Ciudad_Juarez | MST7MDT,M3.2.0,M11.1.0 |
| America/Coral_Harbour | EST5 |
| America/Cordoba | UNK3 |
| America/Costa_Rica | CST6 |
| America/Creston | MST7 |
| America/Cuiaba | UNK4 |
| America/Curacao | AST4 |
| America/Danmarkshavn | GMT0 |
| America/Dawson | MST7 |
| America/Dawson_Creek | MST7 |
| America/Denver | MST7MDT,M3.2.0,M11.1.0 |
| America/Detroit | EST5EDT,M3.2.0,M11.1.0 |
| America/Dominica | AST4 |
| America/Edmonton | MST7MDT,M3.2.0,M11.1.0 |
| America/Eirunepe | UNK5 |
| America/El_Salvador | CST6 |
| America/Ensenada | PST8PDT,M3.2.0,M11.1.0 |
| America/Fort_Nelson | MST7 |
| America/Fort_Wayne | EST5EDT,M3.2.0,M11.1.0 |
| America/Fortaleza | UNK3 |
| America/Glace_Bay | AST4ADT,M3.2.0,M11.1.0 |
| America/Godthab | UNK2UNK,M3.5.0/-1,M10.5.0/0 |
| America/Goose_Bay | AST4ADT,M3.2.0,M11.1.0 |
| America/Grand_Turk | EST5EDT,M3.2.0,M11.1.0 |
| America/Grenada | AST4 |
| America/Guadeloupe | AST4 |
| America/Guatemala | CST6 |
| America/Guayaquil | UNK5 |
| America/Guyana | UNK4 |
| America/Halifax | AST4ADT,M3.2.0,M11.1.0 |
| America/Havana | CST5CDT,M3.2.0/0,M11.1.0/1 |
| America/Hermosillo | MST7 |
| America/Indiana/Indianapolis | EST5EDT,M3.2.0,M11.1.0 |
| America/Indiana/Knox | CST6CDT,M3.2.0,M11.1.0 |
| America/Indiana/Marengo | EST5EDT,M3.2.0,M11.1.0 |
| America/Indiana/Petersburg | EST5EDT,M3.2.0,M11.1.0 |
| America/Indiana/Tell_City | CST6CDT,M3.2.0,M11.1.0 |
| America/Indiana/Vevay | EST5EDT,M3.2.0,M11.1.0 |
| America/Indiana/Vincennes | EST5EDT,M3.2.0,M11.1.0 |
| America/Indiana/Winamac | EST5EDT,M3.2.0,M11.1.0 |
| America/Indianapolis | EST5EDT,M3.2.0,M11.1.0 |
| America/Inuvik | MST7MDT,M3.2.0,M11.1.0 |
| America/Iqaluit | EST5EDT,M3.2.0,M11.1.0 |
| America/Jamaica | EST5 |
| America/Jujuy | UNK3 |
| America/Juneau | AKST9AKDT,M3.2.0,M11.1.0 |
| America/Kentucky/Louisville | EST5EDT,M3.2.0,M11.1.0 |
| America/Kentucky/Monticello | EST5EDT,M3.2.0,M11.1.0 |
| America/Knox_IN | CST6CDT,M3.2.0,M11.1.0 |
| America/Kralendijk | AST4 |
| America/La_Paz | UNK4 |
| America/Lima | UNK5 |
| America/Los_Angeles | PST8PDT,M3.2.0,M11.1.0 |
| America/Louisville | EST5EDT,M3.2.0,M11.1.0 |
| America/Lower_Princes | AST4 |
| America/Maceio | UNK3 |
| America/Managua | CST6 |
| America/Manaus | UNK4 |
| America/Marigot | AST4 |
| America/Martinique | AST4 |
| America/Matamoros | CST6CDT,M3.2.0,M11.1.0 |
| America/Mazatlan | MST7 |
| America/Mendoza | UNK3 |
| America/Menominee | CST6CDT,M3.2.0,M11.1.0 |
| America/Merida | CST6 |
| America/Metlakatla | AKST9AKDT,M3.2.0,M11.1.0 |
| America/Mexico_City | CST6 |
| America/Miquelon | UNK3UNK,M3.2.0,M11.1.0 |
| America/Moncton | AST4ADT,M3.2.0,M11.1.0 |
| America/Monterrey | CST6 |
| America/Montevideo | UNK3 |
| America/Montreal | EST5EDT,M3.2.0,M11.1.0 |
| America/Montserrat | AST4 |
| America/Nassau | EST5EDT,M3.2.0,M11.1.0 |
| America/New_York | EST5EDT,M3.2.0,M11.1.0 |
| America/Nipigon | EST5EDT,M3.2.0,M11.1.0 |
| America/Nome | AKST9AKDT,M3.2.0,M11.1.0 |
| America/Noronha | UNK2 |
| America/North_Dakota/Beulah | CST6CDT,M3.2.0,M11.1.0 |
| America/North_Dakota/Center | CST6CDT,M3.2.0,M11.1.0 |
| America/North_Dakota/New_Salem | CST6CDT,M3.2.0,M11.1.0 |
| America/Nuuk | UNK2UNK,M3.5.0/-1,M10.5.0/0 |
| America/Ojinaga | CST6CDT,M3.2.0,M11.1.0 |
| America/Panama | EST5 |
| America/Pangnirtung | EST5EDT,M3.2.0,M11.1.0 |
| America/Paramaribo | UNK3 |
| America/Phoenix | MST7 |
| America/Port-au-Prince | EST5EDT,M3.2.0,M11.1.0 |
| America/Port_of_Spain | AST4 |
| America/Porto_Acre | UNK5 |
| America/Porto_Velho | UNK4 |
| America/Puerto_Rico | AST4 |
| America/Punta_Arenas | UNK3 |
| America/Rainy_River | CST6CDT,M3.2.0,M11.1.0 |
| America/Rankin_Inlet | CST6CDT,M3.2.0,M11.1.0 |
| America/Recife | UNK3 |
| America/Regina | CST6 |
| America/Resolute | CST6CDT,M3.2.0,M11.1.0 |
| America/Rio_Branco | UNK5 |
| America/Rosario | UNK3 |
| America/Santa_Isabel | PST8PDT,M3.2.0,M11.1.0 |
| America/Santarem | UNK3 |
| America/Santiago | UNK4UNK,M9.1.6/24,M4.1.6/24 |
| America/Santo_Domingo | AST4 |
| America/Sao_Paulo | UNK3 |
| America/Scoresbysund | UNK1UNK,M3.5.0/0,M10.5.0/1 |
| America/Shiprock | MST7MDT,M3.2.0,M11.1.0 |
| America/Sitka | AKST9AKDT,M3.2.0,M11.1.0 |
| America/St_Barthelemy | AST4 |
| America/St_Johns | NST3:30NDT,M3.2.0,M11.1.0 |
| America/St_Kitts | AST4 |
| America/St_Lucia | AST4 |
| America/St_Thomas | AST4 |
| America/St_Vincent | AST4 |
| America/Swift_Current | CST6 |
| America/Tegucigalpa | CST6 |
| America/Thule | AST4ADT,M3.2.0,M11.1.0 |
| America/Thunder_Bay | EST5EDT,M3.2.0,M11.1.0 |
| America/Tijuana | PST8PDT,M3.2.0,M11.1.0 |
| America/Toronto | EST5EDT,M3.2.0,M11.1.0 |
| America/Tortola | AST4 |
| America/Vancouver | PST8PDT,M3.2.0,M11.1.0 |
| America/Virgin | AST4 |
| America/Whitehorse | MST7 |
| America/Winnipeg | CST6CDT,M3.2.0,M11.1.0 |
| America/Yakutat | AKST9AKDT,M3.2.0,M11.1.0 |
| America/Yellowknife | MST7MDT,M3.2.0,M11.1.0 |
| Antarctica/Casey | UNK-11 |
| Antarctica/Davis | UNK-7 |
| Antarctica/DumontDUrville | UNK-10 |
| Antarctica/Macquarie | AEST-10AEDT,M10.1.0,M4.1.0/3 |
| Antarctica/Mawson | UNK-5 |
| Antarctica/McMurdo | NZST-12NZDT,M9.5.0,M4.1.0/3 |
| Antarctica/Palmer | UNK3 |
| Antarctica/Rothera | UNK3 |
| Antarctica/South_Pole | NZST-12NZDT,M9.5.0,M4.1.0/3 |
| Antarctica/Syowa | UNK-3 |
| Antarctica/Troll | UNK0UNK-2,M3.5.0/1,M10.5.0/3 |
| Antarctica/Vostok | UNK-6 |
| Arctic/Longyearbyen | CET-1CEST,M3.5.0,M10.5.0/3 |
| Asia/Aden | UNK-3 |
| Asia/Almaty | UNK-6 |
| Asia/Amman | UNK-3 |
| Asia/Anadyr | UNK-12 |
| Asia/Aqtau | UNK-5 |
| Asia/Aqtobe | UNK-5 |
| Asia/Ashgabat | UNK-5 |
| Asia/Ashkhabad | UNK-5 |
| Asia/Atyrau | UNK-5 |
| Asia/Baghdad | UNK-3 |
| Asia/Bahrain | UNK-3 |
| Asia/Baku | UNK-4 |
| Asia/Bangkok | UNK-7 |
| Asia/Barnaul | UNK-7 |
| Asia/Beirut | EET-2EEST,M3.5.0/0,M10.5.0/0 |
| Asia/Bishkek | UNK-6 |
| Asia/Brunei | UNK-8 |
| Asia/Calcutta | IST-5:30 |
| Asia/Chita | UNK-9 |
| Asia/Choibalsan | UNK-8 |
| Asia/Chongqing | CST-8 |
| Asia/Chungking | CST-8 |
| Asia/Colombo | UNK-5:30 |
| Asia/Dacca | UNK-6 |
| Asia/Damascus | UNK-3 |
| Asia/Dhaka | UNK-6 |
| Asia/Dili | UNK-9 |
| Asia/Dubai | UNK-4 |
| Asia/Dushanbe | UNK-5 |
| Asia/Famagusta | EET-2EEST,M3.5.0/3,M10.5.0/4 |
| Asia/Gaza | EET-2EEST,M3.4.4/50,M10.4.4/50 |
| Asia/Harbin | CST-8 |
| Asia/Hebron | EET-2EEST,M3.4.4/50,M10.4.4/50 |
| Asia/Ho_Chi_Minh | UNK-7 |
| Asia/Hong_Kong | HKT-8 |
| Asia/Hovd | UNK-7 |
| Asia/Irkutsk | UNK-8 |
| Asia/Istanbul | UNK-3 |
| Asia/Jakarta | WIB-7 |
| Asia/Jayapura | WIT-9 |
| Asia/Jerusalem | IST-2IDT,M3.4.4/26,M10.5.0 |
| Asia/Kabul | UNK-4:30 |
| Asia/Kamchatka | UNK-12 |
| Asia/Karachi | PKT-5 |
| Asia/Kashgar | UNK-6 |
| Asia/Kathmandu | UNK-5:45 |
| Asia/Katmandu | UNK-5:45 |
| Asia/Khandyga | UNK-9 |
| Asia/Kolkata | IST-5:30 |
| Asia/Krasnoyarsk | UNK-7 |
| Asia/Kuala_Lumpur | UNK-8 |
| Asia/Kuching | UNK-8 |
| Asia/Kuwait | UNK-3 |
| Asia/Macao | CST-8 |
| Asia/Macau | CST-8 |
| Asia/Magadan | UNK-11 |
| Asia/Makassar | WITA-8 |
| Asia/Manila | PST-8 |
| Asia/Muscat | UNK-4 |
| Asia/Nicosia | EET-2EEST,M3.5.0/3,M10.5.0/4 |
| Asia/Novokuznetsk | UNK-7 |
| Asia/Novosibirsk | UNK-7 |
| Asia/Omsk | UNK-6 |
| Asia/Oral | UNK-5 |
| Asia/Phnom_Penh | UNK-7 |
| Asia/Pontianak | WIB-7 |
| Asia/Pyongyang | KST-9 |
| Asia/Qatar | UNK-3 |
| Asia/Qostanay | UNK-6 |
| Asia/Qyzylorda | UNK-5 |
| Asia/Rangoon | UNK-6:30 |
| Asia/Riyadh | UNK-3 |
| Asia/Saigon | UNK-7 |
| Asia/Sakhalin | UNK-11 |
| Asia/Samarkand | UNK-5 |
| Asia/Seoul | KST-9 |
| Asia/Shanghai | CST-8 |
| Asia/Singapore | UNK-8 |
| Asia/Srednekolymsk | UNK-11 |
| Asia/Taipei | CST-8 |
| Asia/Tashkent | UNK-5 |
| Asia/Tbilisi | UNK-4 |
| Asia/Tehran | UNK-3:30 |
| Asia/Tel_Aviv | IST-2IDT,M3.4.4/26,M10.5.0 |
| Asia/Thimbu | UNK-6 |
| Asia/Thimphu | UNK-6 |
| Asia/Tokyo | JST-9 |
| Asia/Tomsk | UNK-7 |
| Asia/Ujung_Pandang | WITA-8 |
| Asia/Ulaanbaatar | UNK-8 |
| Asia/Ulan_Bator | UNK-8 |
| Asia/Urumqi | UNK-6 |
| Asia/Ust-Nera | UNK-10 |
| Asia/Vientiane | UNK-7 |
| Asia/Vladivostok | UNK-10 |
| Asia/Yakutsk | UNK-9 |
| Asia/Yangon | UNK-6:30 |
| Asia/Yekaterinburg | UNK-5 |
| Asia/Yerevan | UNK-4 |
| Atlantic/Azores | UNK1UNK,M3.5.0/0,M10.5.0/1 |
| Atlantic/Bermuda | AST4ADT,M3.2.0,M11.1.0 |
| Atlantic/Canary | WET0WEST,M3.5.0/1,M10.5.0 |
| Atlantic/Cape_Verde | UNK1 |
| Atlantic/Faeroe | WET0WEST,M3.5.0/1,M10.5.0 |
| Atlantic/Faroe | WET0WEST,M3.5.0/1,M10.5.0 |
| Atlantic/Jan_Mayen | CET-1CEST,M3.5.0,M10.5.0/3 |
| Atlantic/Madeira | WET0WEST,M3.5.0/1,M10.5.0 |
| Atlantic/Reykjavik | GMT0 |
| Atlantic/South_Georgia | UNK2 |
| Atlantic/St_Helena | GMT0 |
| Atlantic/Stanley | UNK3 |
| Australia/ACT | AEST-10AEDT,M10.1.0,M4.1.0/3 |
| Australia/Adelaide | ACST-9:30ACDT,M10.1.0,M4.1.0/3 |
| Australia/Brisbane | AEST-10 |
| Australia/Broken_Hill | ACST-9:30ACDT,M10.1.0,M4.1.0/3 |
| Australia/Canberra | AEST-10AEDT,M10.1.0,M4.1.0/3 |
| Australia/Currie | AEST-10AEDT,M10.1.0,M4.1.0/3 |
| Australia/Darwin | ACST-9:30 |
| Australia/Eucla | UNK-8:45 |
| Australia/Hobart | AEST-10AEDT,M10.1.0,M4.1.0/3 |
| Australia/LHI | UNK-10:30UNK-11,M10.1.0,M4.1.0 |
| Australia/Lindeman | AEST-10 |
| Australia/Lord_Howe | UNK-10:30UNK-11,M10.1.0,M4.1.0 |
| Australia/Melbourne | AEST-10AEDT,M10.1.0,M4.1.0/3 |
| Australia/NSW | AEST-10AEDT,M10.1.0,M4.1.0/3 |
| Australia/North | ACST-9:30 |
| Australia/Perth | AWST-8 |
| Australia/Queensland | AEST-10 |
| Australia/South | ACST-9:30ACDT,M10.1.0,M4.1.0/3 |
| Australia/Sydney | AEST-10AEDT,M10.1.0,M4.1.0/3 |
| Australia/Tasmania | AEST-10AEDT,M10.1.0,M4.1.0/3 |
| Australia/Victoria | AEST-10AEDT,M10.1.0,M4.1.0/3 |
| Australia/West | AWST-8 |
| Australia/Yancowinna | ACST-9:30ACDT,M10.1.0,M4.1.0/3 |
| Brazil/Acre | UNK5 |
| Brazil/DeNoronha | UNK2 |
| Brazil/East | UNK3 |
| Brazil/West | UNK4 |
| CET | CET-1CEST,M3.5.0,M10.5.0/3 |
| CST6CDT | CST6CDT,M3.2.0,M11.1.0 |
| Canada/Atlantic | AST4ADT,M3.2.0,M11.1.0 |
| Canada/Central | CST6CDT,M3.2.0,M11.1.0 |
| Canada/Eastern | EST5EDT,M3.2.0,M11.1.0 |
| Canada/Mountain | MST7MDT,M3.2.0,M11.1.0 |
| Canada/Newfoundland | NST3:30NDT,M3.2.0,M11.1.0 |
| Canada/Pacific | PST8PDT,M3.2.0,M11.1.0 |
| Canada/Saskatchewan | CST6 |
| Canada/Yukon | MST7 |
| Chile/Continental | UNK4UNK,M9.1.6/24,M4.1.6/24 |
| Chile/EasterIsland | UNK6UNK,M9.1.6/22,M4.1.6/22 |
| Cuba | CST5CDT,M3.2.0/0,M11.1.0/1 |
| EET | EET-2EEST,M3.5.0/3,M10.5.0/4 |
| EST | EST5 |
| EST5EDT | EST5EDT,M3.2.0,M11.1.0 |
| Egypt | EET-2EEST,M4.5.5/0,M10.5.4/24 |
| Eire | IST-1GMT0,M10.5.0,M3.5.0/1 |
| Europe/Amsterdam | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Andorra | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Astrakhan | UNK-4 |
| Europe/Athens | EET-2EEST,M3.5.0/3,M10.5.0/4 |
| Europe/Belfast | GMT0BST,M3.5.0/1,M10.5.0 |
| Europe/Belgrade | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Berlin | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Bratislava | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Brussels | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Bucharest | EET-2EEST,M3.5.0/3,M10.5.0/4 |
| Europe/Budapest | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Busingen | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Chisinau | EET-2EEST,M3.5.0,M10.5.0/3 |
| Europe/Copenhagen | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Dublin | IST-1GMT0,M10.5.0,M3.5.0/1 |
| Europe/Gibraltar | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Guernsey | GMT0BST,M3.5.0/1,M10.5.0 |
| Europe/Helsinki | EET-2EEST,M3.5.0/3,M10.5.0/4 |
| Europe/Isle_of_Man | GMT0BST,M3.5.0/1,M10.5.0 |
| Europe/Istanbul | UNK-3 |
| Europe/Jersey | GMT0BST,M3.5.0/1,M10.5.0 |
| Europe/Kaliningrad | EET-2 |
| Europe/Kiev | EET-2EEST,M3.5.0/3,M10.5.0/4 |
| Europe/Kirov | MSK-3 |
| Europe/Kyiv | EET-2EEST,M3.5.0/3,M10.5.0/4 |
| Europe/Lisbon | WET0WEST,M3.5.0/1,M10.5.0 |
| Europe/Ljubljana | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/London | GMT0BST,M3.5.0/1,M10.5.0 |
| Europe/Luxembourg | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Madrid | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Malta | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Mariehamn | EET-2EEST,M3.5.0/3,M10.5.0/4 |
| Europe/Minsk | UNK-3 |
| Europe/Monaco | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Moscow | MSK-3 |
| Europe/Nicosia | EET-2EEST,M3.5.0/3,M10.5.0/4 |
| Europe/Oslo | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Paris | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Podgorica | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Prague | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Riga | EET-2EEST,M3.5.0/3,M10.5.0/4 |
| Europe/Rome | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Samara | UNK-4 |
| Europe/San_Marino | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Sarajevo | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Saratov | UNK-4 |
| Europe/Simferopol | MSK-3 |
| Europe/Skopje | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Sofia | EET-2EEST,M3.5.0/3,M10.5.0/4 |
| Europe/Stockholm | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Tallinn | EET-2EEST,M3.5.0/3,M10.5.0/4 |
| Europe/Tirane | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Tiraspol | EET-2EEST,M3.5.0,M10.5.0/3 |
| Europe/Ulyanovsk | UNK-4 |
| Europe/Uzhgorod | EET-2EEST,M3.5.0/3,M10.5.0/4 |
| Europe/Vaduz | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Vatican | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Vienna | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Vilnius | EET-2EEST,M3.5.0/3,M10.5.0/4 |
| Europe/Volgograd | MSK-3 |
| Europe/Warsaw | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Zagreb | CET-1CEST,M3.5.0,M10.5.0/3 |
| Europe/Zaporozhye | EET-2EEST,M3.5.0/3,M10.5.0/4 |
| Europe/Zurich | CET-1CEST,M3.5.0,M10.5.0/3 |
| Factory | UNK0 |
| GB | GMT0BST,M3.5.0/1,M10.5.0 |
| HST | HST10 |
| Hongkong | HKT-8 |
| Iceland | GMT0 |
| Indian/Antananarivo | EAT-3 |
| Indian/Chagos | UNK-6 |
| Indian/Christmas | UNK-7 |
| Indian/Cocos | UNK-6:30 |
| Indian/Comoro | EAT-3 |
| Indian/Kerguelen | UNK-5 |
| Indian/Mahe | UNK-4 |
| Indian/Maldives | UNK-5 |
| Indian/Mauritius | UNK-4 |
| Indian/Mayotte | EAT-3 |
| Indian/Reunion | UNK-4 |
| Iran | UNK-3:30 |
| Israel | IST-2IDT,M3.4.4/26,M10.5.0 |
| Jamaica | EST5 |
| Japan | JST-9 |
| Kwajalein | UNK-12 |
| Libya | EET-2 |
| MET | MET-1MEST,M3.5.0,M10.5.0/3 |
| MST | MST7 |
| MST7MDT | MST7MDT,M3.2.0,M11.1.0 |
| Mexico/BajaNorte | PST8PDT,M3.2.0,M11.1.0 |
| Mexico/BajaSur | MST7 |
| Mexico/General | CST6 |
| NZ | NZST-12NZDT,M9.5.0,M4.1.0/3 |
| NZ-CHAT | UNK-12:45UNK,M9.5.0/2:45,M4.1.0/3:45 |
| Navajo | MST7MDT,M3.2.0,M11.1.0 |
| PRC | CST-8 |
| PST8PDT | PST8PDT,M3.2.0,M11.1.0 |
| Pacific/Apia | UNK-13 |
| Pacific/Auckland | NZST-12NZDT,M9.5.0,M4.1.0/3 |
| Pacific/Bougainville | UNK-11 |
| Pacific/Chatham | UNK-12:45UNK,M9.5.0/2:45,M4.1.0/3:45 |
| Pacific/Chuuk | UNK-10 |
| Pacific/Easter | UNK6UNK,M9.1.6/22,M4.1.6/22 |
| Pacific/Efate | UNK-11 |
| Pacific/Enderbury | UNK-13 |
| Pacific/Fakaofo | UNK-13 |
| Pacific/Fiji | UNK-12 |
| Pacific/Funafuti | UNK-12 |
| Pacific/Galapagos | UNK6 |
| Pacific/Gambier | UNK9 |
| Pacific/Guadalcanal | UNK-11 |
| Pacific/Guam | ChST-10 |
| Pacific/Honolulu | HST10 |
| Pacific/Johnston | HST10 |
| Pacific/Kanton | UNK-13 |
| Pacific/Kiritimati | UNK-14 |
| Pacific/Kosrae | UNK-11 |
| Pacific/Kwajalein | UNK-12 |
| Pacific/Majuro | UNK-12 |
| Pacific/Marquesas | UNK9:30 |
| Pacific/Midway | SST11 |
| Pacific/Nauru | UNK-12 |
| Pacific/Niue | UNK11 |
| Pacific/Norfolk | UNK-11UNK,M10.1.0,M4.1.0/3 |
| Pacific/Noumea | UNK-11 |
| Pacific/Pago_Pago | SST11 |
| Pacific/Palau | UNK-9 |
| Pacific/Pitcairn | UNK8 |
| Pacific/Pohnpei | UNK-11 |
| Pacific/Ponape | UNK-11 |
| Pacific/Port_Moresby | UNK-10 |
| Pacific/Rarotonga | UNK10 |
| Pacific/Saipan | ChST-10 |
| Pacific/Samoa | SST11 |
| Pacific/Tahiti | UNK10 |
| Pacific/Tarawa | UNK-12 |
| Pacific/Tongatapu | UNK-13 |
| Pacific/Truk | UNK-10 |
| Pacific/Wake | UNK-12 |
| Pacific/Wallis | UNK-12 |
| Pacific/Yap | UNK-10 |
| Poland | CET-1CEST,M3.5.0,M10.5.0/3 |
| Portugal | WET0WEST,M3.5.0/1,M10.5.0 |
| ROC | CST-8 |
| ROK | KST-9 |
| Singapore | UNK-8 |
| Turkey | UNK-3 |
| US/Alaska | AKST9AKDT,M3.2.0,M11.1.0 |
| US/Aleutian | HST10HDT,M3.2.0,M11.1.0 |
| US/Arizona | MST7 |
| US/Central | CST6CDT,M3.2.0,M11.1.0 |
| US/East-Indiana | EST5EDT,M3.2.0,M11.1.0 |
| US/Eastern | EST5EDT,M3.2.0,M11.1.0 |
| US/Hawaii | HST10 |
| US/Indiana-Starke | CST6CDT,M3.2.0,M11.1.0 |
| US/Michigan | EST5EDT,M3.2.0,M11.1.0 |
| US/Mountain | MST7MDT,M3.2.0,M11.1.0 |
| US/Pacific | PST8PDT,M3.2.0,M11.1.0 |
| US/Samoa | SST11 |
| WET | WET0WEST,M3.5.0/1,M10.5.0 |
Generated with tzdata.IANA_VERSION='2023c' tzdata.version='2023.3'
Legacy options
These only apply to Core version 2.3.0 (releases before 1.15.0):
| Configuration key | Build flag | Description |
|---|---|---|
ntpTimeout |
NTP_TIMEOUT |
(default: 2000 ms) How long to wait for NTP server response |
ntpOffset |
NTP_TIME_OFFSET |
(default: 60 minutes, UTC+1) |
ntpDst |
NTP_DAY_LIGHT |
(defaut: 1) Enable DST based on the current region |
ntpRegion |
NTP_DST_REGION |
(default: 0, Europe) Set to 1 for USA (Constants defined by the NtpClientLib) |
NTP_SYNC_INTERVAL |
(defaut: 60 seconds) Initial NTP sync interval |