NTP

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 TZ.h that translates to PSTR("UTC0"))
ntpDhcp	NTP_DHCP_SERVER (seconds)	(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
	NTP_WAIT_FOR_SYNC	(default: 1, enabled) Normally, ESPurna will wait for NTP to sync over wifi before enabling the scheduler. This is so it ensures that the schedules will never run outside their specified times, even if that means they don't run at all. If, instead, you want them to always run, even if the time is not correct, you can set this build flag to 0, which will cause ESPurna to act as if the time is correct when it boots up. That way, schedules will run even if NTP has not synced (but obviously at potentially the wrong times). If the network becomes available at some point, NTP will sync and resume running at the correct times.

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

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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