Mountain Time in Mexico
E57707
Mountain Time in Mexico is the standard time zone observed in several northern and northwestern Mexican states, aligning with the Mountain Time Zone used in parts of the United States.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Mountain Time (Mexico) | 2 |
| Mountain Time in Mexico canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T458671 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Mountain Time in Mexico Context triple: [Mexico Time Zones, includesTimeZone, Mountain Time in Mexico]
-
A.
Sierra Madre Occidental
The Sierra Madre Occidental is a major mountain range in western Mexico known for its rugged terrain, deep canyons, and significant biodiversity.
-
B.
Tehuantepec Ridge
Tehuantepec Ridge is a prominent submarine volcanic ridge on the Cocos Plate in the eastern Pacific Ocean, extending toward the Middle America Trench off the coast of southern Mexico.
-
C.
Mexican Plateau
The Mexican Plateau is a vast highland region in northern and central Mexico, characterized by its arid to semi-arid climate, elevated basins, and surrounding mountain ranges.
-
D.
Sierra Madre Oriental
The Sierra Madre Oriental is a major mountain range in northeastern Mexico known for its rugged terrain, rich biodiversity, and significant influence on the region’s climate and watersheds.
-
E.
Sierra Madre de Oaxaca region
The Sierra Madre de Oaxaca region is a mountainous area in southern Mexico known for its rugged terrain, rich biodiversity, and numerous indigenous communities.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Mountain Time in Mexico Target entity description: Mountain Time in Mexico is the standard time zone observed in several northern and northwestern Mexican states, aligning with the Mountain Time Zone used in parts of the United States.
-
A.
Sierra Madre Occidental
The Sierra Madre Occidental is a major mountain range in western Mexico known for its rugged terrain, deep canyons, and significant biodiversity.
-
B.
Tehuantepec Ridge
Tehuantepec Ridge is a prominent submarine volcanic ridge on the Cocos Plate in the eastern Pacific Ocean, extending toward the Middle America Trench off the coast of southern Mexico.
-
C.
Mexican Plateau
The Mexican Plateau is a vast highland region in northern and central Mexico, characterized by its arid to semi-arid climate, elevated basins, and surrounding mountain ranges.
-
D.
Sierra Madre Oriental
The Sierra Madre Oriental is a major mountain range in northeastern Mexico known for its rugged terrain, rich biodiversity, and significant influence on the region’s climate and watersheds.
-
E.
Sierra Madre de Oaxaca region
The Sierra Madre de Oaxaca region is a mountainous area in southern Mexico known for its rugged terrain, rich biodiversity, and numerous indigenous communities.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | time zone in Mexico ⓘ |
| alignsWith |
Mountain Time Zone
ⓘ
surface form:
Mountain Time Zone in the United States
|
| coordinatedWith | U.S. Mountain Time for cross‑border commerce ⓘ |
| country | Mexico ⓘ |
| DSTAlignment | often aligned with U.S. daylight saving schedule in border municipalities ⓘ |
| DSTEndRule | last Sunday in October (historically, may vary by reform) ⓘ |
| DSTStartRule | first Sunday in April (historically, may vary by reform) ⓘ |
| governingAuthority |
Government of Mexico
ⓘ
Mexican Congress ⓘ
surface form:
Mexican Congress (for time zone legislation)
Secretariat of the Interior (Mexico) ⓘ
surface form:
Ministry of the Interior of Mexico
|
| IANAZoneExample |
America/Chihuahua
ⓘ
America/Hermosillo ⓘ America/Mazatlan ⓘ America/Ojinaga ⓘ |
| languageOfOfficialName | Spanish ⓘ |
| legalBasis |
Mexico Time Zones
ⓘ
surface form:
Mexican federal time zone law
|
| neighboringTimeZoneEast |
Mexico Time Zones
ⓘ
surface form:
Central Time in Mexico
|
| neighboringTimeZoneWest | Pacific Time in Mexico ⓘ |
| observedBySector |
broadcasting
ⓘ
federal government offices in covered states ⓘ transportation ⓘ |
| observedInBorderRegionWith |
United States of America
ⓘ
surface form:
United States
|
| observedInMunicipality |
Chihuahua City
ⓘ
Ciudad Juárez ⓘ Culiacán ⓘ La Paz, Baja California Sur ⓘ Mazatlán, Mexico ⓘ
surface form:
Mazatlán
|
| observedInRegion |
northern Mexico
ⓘ
northwestern Mexico ⓘ |
| observedInState |
Baja California Sur
ⓘ
Chihuahua ⓘ Durango ⓘ Nayarit ⓘ Sinaloa ⓘ Sonora ⓘ parts of Coahuila ⓘ parts of Nuevo León ⓘ parts of Tamaulipas ⓘ |
| officialNameInSpanish | Tiempo de la Montaña en México ⓘ |
| timeStandard | Coordinated Universal Time ⓘ |
| typicalAbbreviationDaylight |
Mountain Daylight Time
ⓘ
surface form:
MDT (Mountain Daylight Time)
|
| typicalAbbreviationStandard | MST (Mountain Standard Time) ⓘ |
| usedFor |
domestic transportation timetables in covered states
ⓘ
scheduling cross‑border trade with U.S. Mountain states ⓘ |
| usesDaylightSavingTime | yes, in most municipalities ⓘ |
| UTCoffsetDaylight | UTC−06:00 ⓘ |
| UTCoffsetStandard | UTC−07:00 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Mountain Time in Mexico Description of subject: Mountain Time in Mexico is the standard time zone observed in several northern and northwestern Mexican states, aligning with the Mountain Time Zone used in parts of the United States.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Mountain Time (Mexico)