Offset
UTC+02:00 significa que la hora local va dos horas por delante de UTC en ese momento. No indica el lugar ni la regla de horario de verano.
Offsets UTC y abreviaturas de zonas horarias
Una referencia practica para leer offsets como UTC+05:30, consultar la hora actual en cada offset y detectar abreviaturas ambiguas como CST, IST, BST y EST.
La version corta
Zona horaria
Europe/Paris es un identificador real de zona. Puede ser UTC+01:00 en invierno y UTC+02:00 en verano.
Abreviatura
CST es una etiqueta usada por personas, pero puede significar varios offsets distintos. Trátala como texto de visualizacion, no como identificador fiable.
Tabla de offsets UTC
Busca por offset, ciudad, pais o nota. Recuerda que estos son offsets fijos desde UTC, no reglas completas de zona horaria.
| Offset | Hora actual | Lugares de ejemplo | Notas |
|---|---|---|---|
| UTC-12:00 | Cargando... | Baker Island, Howland Island | Uninhabited US islands. Useful mostly as a boundary case for date calculations. |
| UTC-11:00 | Cargando... | American Samoa, Niue, Midway Atoll | One of the last inhabited offsets to enter a new calendar day. |
| UTC-10:00 | Cargando... | Honolulu, Tahiti, Cook Islands | Hawaii does not use daylight saving time. |
| UTC-09:30 | Cargando... | Marquesas Islands | A rare 30-minute negative offset. |
| UTC-09:00 | Cargando... | Anchorage standard time, Gambier Islands | Alaska is UTC-09:00 in standard time and UTC-08:00 in daylight time. |
| UTC-08:00 | Cargando... | Los Angeles standard time, Vancouver standard time, Pitcairn Islands | Pacific Time is UTC-08:00 in standard time and UTC-07:00 in daylight time. |
| UTC-07:00 | Cargando... | Denver standard time, Phoenix, Yukon | Arizona mostly stays here year-round, while many Mountain Time locations move to UTC-06:00 in daylight time. |
| UTC-06:00 | Cargando... | Chicago standard time, Mexico City standard time, Guatemala | Central Time locations that observe daylight saving often move to UTC-05:00. |
| UTC-05:00 | Cargando... | New York standard time, Lima, Bogota, Jamaica | Eastern Time is UTC-05:00 in standard time and UTC-04:00 in daylight time. |
| UTC-04:00 | Cargando... | Santiago standard time, Caracas, La Paz, Atlantic daylight time | This offset can mean standard time in one place and daylight time in another. |
| UTC-03:30 | Cargando... | Newfoundland standard time | Newfoundland is the best-known North American half-hour offset. |
| UTC-03:00 | Cargando... | Sao Paulo, Buenos Aires, Montevideo, Atlantic daylight time | Common across eastern South America and parts of the Atlantic. |
| UTC-02:00 | Cargando... | South Georgia, Fernando de Noronha | A small-population offset used by Atlantic islands. |
| UTC-01:00 | Cargando... | Azores standard time, Cape Verde | Azores moves to UTC+00:00 during daylight time. |
| UTC+00:00 | Cargando... | UTC, London standard time, Reykjavik, Accra, Lisbon standard time | UTC is the reference scale; local civil zones may still have daylight rules. |
| UTC+01:00 | Cargando... | Paris standard time, Lagos, London daylight time, Dublin summer time | CET in winter and British/Irish summer time both land here. |
| UTC+02:00 | Cargando... | Athens standard time, Cairo, Johannesburg, Central European daylight time | Can be standard time in Africa and Eastern Europe, or daylight time in Central Europe. |
| UTC+03:00 | Cargando... | Moscow, Istanbul, Riyadh, East Africa Time | Many places here do not currently change clocks seasonally. |
| UTC+03:30 | Cargando... | Tehran standard time | Iran uses a half-hour base offset. |
| UTC+04:00 | Cargando... | Dubai, Baku, Mauritius, Samara | Gulf Standard Time is UTC+04:00, but GST is not globally unique. |
| UTC+04:30 | Cargando... | Kabul | Afghanistan uses a 30-minute offset. |
| UTC+05:00 | Cargando... | Karachi, Tashkent, Maldives | Pakistan Standard Time is commonly written PKT to avoid PST ambiguity. |
| UTC+05:30 | Cargando... | India, Sri Lanka | India Standard Time is one of the most widely used half-hour offsets. |
| UTC+05:45 | Cargando... | Kathmandu, Nepal | Nepal is one of the best-known 45-minute offsets. |
| UTC+06:00 | Cargando... | Dhaka, Almaty, Bhutan | Bangladesh Standard Time is BST, which conflicts with other meanings of BST. |
| UTC+06:30 | Cargando... | Myanmar, Cocos Islands | A 30-minute offset used in Myanmar and the Cocos Islands. |
| UTC+07:00 | Cargando... | Bangkok, Jakarta, Ho Chi Minh City, Phnom Penh | Common across mainland Southeast Asia and western Indonesia. |
| UTC+08:00 | Cargando... | Beijing, Singapore, Manila, Perth, Kuala Lumpur | China uses one national civil time even though the country spans several solar-time regions. |
| UTC+08:45 | Cargando... | Eucla, Western Australia | A rare 45-minute offset used in a small part of Australia. |
| UTC+09:00 | Cargando... | Tokyo, Seoul, Pyongyang, Palau | Japan and Korea do not currently use daylight saving time. |
| UTC+09:30 | Cargando... | Adelaide standard time, Darwin | Central Australia uses this half-hour offset; some locations move to UTC+10:30 in daylight time. |
| UTC+10:00 | Cargando... | Sydney standard time, Brisbane, Guam, Port Moresby | Eastern Australia is split: some places observe daylight time and others do not. |
| UTC+10:30 | Cargando... | Lord Howe Island standard time, Adelaide daylight time | Lord Howe has a distinctive 30-minute daylight shift. |
| UTC+11:00 | Cargando... | Solomon Islands, Vanuatu, New Caledonia, Sydney daylight time | Can be permanent standard time in the Pacific or daylight time in southeastern Australia. |
| UTC+12:00 | Cargando... | Auckland standard time, Fiji standard time, Marshall Islands | New Zealand moves to UTC+13:00 during daylight time. |
| UTC+12:45 | Cargando... | Chatham Islands standard time | A rare 45-minute offset used by the Chatham Islands. |
| UTC+13:00 | Cargando... | Auckland daylight time, Samoa, Tonga, Phoenix Islands | Among the first inhabited offsets to enter a new calendar day. |
| UTC+14:00 | Cargando... | Kiritimati, Line Islands | The farthest-ahead civil offset in regular use. |
No se encontraron offsets.
Abreviaturas ambiguas de zonas horarias
Usa esta tabla cuando alguien envie una hora de reunion con una etiqueta corta. La respuesta mas segura suele ser pedir una ciudad o una zona IANA.
CST
3 significados comunes Central Standard Time UTC-06:00 Central North America standard time
China Standard Time UTC+08:00 China year-round civil time
Cuba Standard Time UTC-05:00 Cuba standard time
CST is one of the most dangerous abbreviations because the possible answers are separated by 13 to 14 hours.
Mas seguro: Use America/Chicago, Asia/Shanghai, or America/Havana.
IST
3 significados comunes India Standard Time UTC+05:30 India and Sri Lanka in many contexts year-round civil time
Irish Standard Time UTC+01:00 Ireland summer time
Israel Standard Time UTC+02:00 Israel standard time
IST can point to South Asia, Ireland, or Israel, so a date and location are mandatory.
Mas seguro: Use Asia/Kolkata, Europe/Dublin, or Asia/Jerusalem.
BST
3 significados comunes British Summer Time UTC+01:00 United Kingdom summer time
Bangladesh Standard Time UTC+06:00 Bangladesh year-round civil time
Bougainville Standard Time UTC+11:00 Bougainville year-round civil time
BST changes meaning by region, and British Summer Time is not used in winter.
Mas seguro: Use Europe/London, Asia/Dhaka, or Pacific/Bougainville.
EST
2 significados comunes Eastern Standard Time UTC-05:00 Eastern North America and some Caribbean contexts standard time
Eastern Standard Time UTC+10:00 Australia in some informal or legacy contexts standard time
In North America, EST is not the same as EDT. In Australia, AEST is the safer abbreviation.
Mas seguro: Use America/New_York, America/Toronto, Australia/Sydney, or Australia/Brisbane.
PST
3 significados comunes Pacific Standard Time UTC-08:00 Pacific North America standard time
Philippine Standard Time UTC+08:00 Philippines year-round civil time
Pakistan Standard Time UTC+05:00 Pakistan often written PKT in technical contexts
PST can be a 13 to 16 hour mistake depending on which region the writer meant.
Mas seguro: Use America/Los_Angeles, Asia/Manila, or Asia/Karachi.
MST
2 significados comunes Mountain Standard Time UTC-07:00 Mountain North America standard time or year-round in parts of Arizona
Myanmar Standard Time UTC+06:30 Myanmar less common; MMT is often clearer
Mountain Time is especially tricky because some places observe daylight saving time and some do not.
Mas seguro: Use America/Denver, America/Phoenix, or Asia/Yangon.
AST
2 significados comunes Atlantic Standard Time UTC-04:00 Atlantic Canada and the Caribbean standard time or year-round in some places
Arabia Standard Time UTC+03:00 Saudi Arabia and nearby countries year-round civil time
AST is a seven-hour difference depending on whether the context is Atlantic or Arabia.
Mas seguro: Use America/Halifax, America/Puerto_Rico, or Asia/Riyadh.
GST
2 significados comunes Gulf Standard Time UTC+04:00 United Arab Emirates and Oman year-round civil time
South Georgia Time UTC-02:00 South Georgia and the South Sandwich Islands year-round civil time
GST is uncommon enough that many readers will guess incorrectly without a place name.
Mas seguro: Use Asia/Dubai or Atlantic/South_Georgia.
CDT
3 significados comunes Central Daylight Time UTC-05:00 Central North America daylight time
Cuba Daylight Time UTC-04:00 Cuba daylight time
Australian Central Daylight Time UTC+10:30 South Australia in daylight time usually written ACDT
The D usually means daylight time, so the date matters as much as the region.
Mas seguro: Use America/Chicago, America/Havana, or Australia/Adelaide.
HST
normalmente clara Hawaii Standard Time UTC-10:00 Hawaii year-round civil time
HST is less ambiguous than CST or IST, but a city name is still better for software.
Mas seguro: Use Pacific/Honolulu.
UTC
normalmente clara Coordinated Universal Time UTC+00:00 global reference scale always
UTC is a time standard, not a local civil time zone.
Mas seguro: UTC is safe when you truly mean the zero offset reference time.
No se encontraron abreviaturas.
Como leer un offset UTC
UTC+05:30
Suma 5 horas y 30 minutos a UTC. Si son las 12:00 UTC, el reloj de offset fijo marca 17:30.
UTC-04:00
Resta 4 horas a UTC. Si son las 12:00 UTC, el reloj de offset fijo marca 08:00.
Z
En timestamps ISO 8601, Z significa offset cero respecto a UTC, como en 2026-05-25T12:00:00Z.
Un offset numerico es excelente para un timestamp unico porque indica exactamente como se relaciona con UTC. Es debil para eventos futuros recurrentes porque los gobiernos pueden cambiar reglas de horario de verano y el offset de una ciudad puede variar por temporada.
Offsets de media hora y cuarto de hora
No todos los offsets civiles son horas completas. India usa UTC+05:30, Nepal usa UTC+05:45, Terranova usa UTC-03:30 y las islas Chatham usan UTC+12:45. No son errores; son reglas legales de hora local.
Esto importa en hojas de calculo, logs y herramientas de agenda. El codigo que asume offsets de horas completas falla para millones de personas.
Regla practica
Guarda instantes exactos en UTC. Guarda eventos locales futuros con una zona horaria IANA basada en ciudad. Muestra offsets y abreviaturas como etiquetas utiles, no como fuente de verdad.
Offset, abreviatura, zona IANA: que usar?
Caso de uso Mejor valor Por que
Log o timestamp de base de datos 2026-05-25T12:00:00Z o epoch UTC Representa un instante exacto y evita ambiguedad de hora local.
Evento de calendario en un lugar real America/New_York, Europe/Madrid, Asia/Tokyo La zona contiene reglas legales y de horario de verano.
Timestamp unico de un sistema externo Timestamp ISO con offset numerico El offset basta para recuperar el instante UTC.
Etiqueta visible para usuarios Nombre localizado o abreviatura mas ciudad Es facil de leer y la ciudad evita ambiguedad.
Cuando esta pagina no basta
Esta pagina es una referencia de offsets y etiquetas. No sustituye a un conversor consciente de la fecha. Si necesitas saber si Paris y Nueva York estan a 5, 6 o 7 horas en una fecha concreta, usa el conversor de zonas horarias. Si necesitas una hora de reunion que funcione para varias ciudades, usa el planificador de reuniones.
Preguntas frecuentes
Un offset UTC es lo mismo que una zona horaria?
No. Un offset UTC es solo una diferencia numerica respecto a UTC en un momento concreto. Una zona como America/New_York o Europe/Paris incluye reglas de horario de verano y cambios historicos.
Por que debo evitar abreviaturas en horarios?
Muchas abreviaturas se comparten entre regiones sin relacion. CST puede significar Central Standard Time en Norteamerica, China Standard Time o Cuba Standard Time. Usa una zona IANA basada en ciudad cuando el evento importe.
UTC y GMT son lo mismo?
Para offsets civiles cotidianos, UTC+00:00 y GMT+00:00 suelen tratarse igual. Tecnicamente, UTC es el estandar moderno usado en timestamps y computacion, mientras que GMT es un nombre historico y civil.
Por que algunos offsets usan 30 o 45 minutos?
La hora civil se fija por ley e historia local, no por una regla universal de horas completas. India, Nepal, Terranova, Myanmar, las islas Chatham y algunas regiones australianas usan offsets no enteros.
Puedo guardar solo un offset para una reunion recurrente?
Solo si la reunion debe quedar fija a ese offset. Para hora civil local, guarda una zona IANA y la hora local. Si no, los cambios de horario de verano pueden mover la reunion una hora para algunos participantes.
Notas de referencia
Esta guia sigue el modelo practico de la base de datos de zonas horarias IANA: los identificadores basados en ubicacion son la entrada estable para la hora civil, mientras que las abreviaturas son etiquetas humanas que pueden ser ambiguas. Unicode CLDR tambien separa offsets GMT/UTC, nombres por ubicacion y nombres de metazona.