Mountain Standard Time (no DST)

E679551

civil time time zone

Mountain Standard Time (no DST) is a fixed time zone used in parts of North America that remains on standard time year-round without observing daylight saving time.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (2)

Label	Occurrences
Mountain Standard Time	38
Mountain Standard Time (no DST) canonical	1

How this entity was disambiguated

This entity first appeared as the object of triple T7619732 — 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 Standard Time (no DST)
Context triple: [Hopi Point, timeZone, Mountain Standard Time (no DST)]

A. Wyoming station
Wyoming station is a local rapid transit stop on SEPTA's Broad Street Line in Philadelphia, Pennsylvania.
B. Summit City
Summit City is a nickname for Fort Wayne, Indiana, reflecting its historical importance as a high point along key transportation routes.
C. Mountain West
Mountain West is a collegiate athletic conference in the western United States that sponsors NCAA Division I sports across multiple member universities.
D. Desert Dome
Desert Dome is a prominent geodesic dome exhibit that recreates multiple desert ecosystems and their wildlife at Omaha’s Henry Doorly Zoo and Aquarium.
E. Mesa Central
Mesa Central is a high, semi-arid plateau region in central Mexico known for its basins, volcanic ranges, and significant agricultural and urban centers.
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 Standard Time (no DST)
Target entity description: Mountain Standard Time (no DST) is a fixed time zone used in parts of North America that remains on standard time year-round without observing daylight saving time.

A. Wyoming station
Wyoming station is a local rapid transit stop on SEPTA's Broad Street Line in Philadelphia, Pennsylvania.
B. Summit City
Summit City is a nickname for Fort Wayne, Indiana, reflecting its historical importance as a high point along key transportation routes.
C. Mountain West
Mountain West is a collegiate athletic conference in the western United States that sponsors NCAA Division I sports across multiple member universities.
D. Desert Dome
Desert Dome is a prominent geodesic dome exhibit that recreates multiple desert ecosystems and their wildlife at Omaha’s Henry Doorly Zoo and Aquarium.
E. Mesa Central
Mesa Central is a high, semi-arid plateau region in central Mexico known for its basins, volcanic ranges, and significant agricultural and urban centers.
F. None of above. chosen

Statements (44)

Predicate	Object
instanceOf	civil time ⓘ time zone ⓘ
appliesToLatitudeBand	mid‑latitude regions of western North America ⓘ
hasDSTVariant	Mountain Daylight Time ⓘ
isAbbreviation	MST ⓘ
isCanonicalIANAZoneExample	America/Chihuahua NERFINISHED ⓘ America/Hermosillo NERFINISHED ⓘ America/Mazatlan ⓘ America/Phoenix NERFINISHED ⓘ America/Whitehorse ⓘ
isColloquiallyCalled	Arizona time (in the United States context) ⓘ
isCoordinatedWith	business hours in neighboring DST‑observing regions by remaining at UTC−07:00 year‑round ⓘ
isDefinedBy	fixed UTC offset without DST ⓘ
isDifferentFrom	Mountain Daylight Time ⓘ Mountain Time (with DST) NERFINISHED ⓘ
isOneHourAheadOf	Pacific Standard Time ⓘ
isOneHourBehindOf	Central Standard Time NERFINISHED ⓘ
isPartOfTimeZoneRegion	North American time zones ⓘ
isSameClockTimeAs	Pacific Daylight Time NERFINISHED ⓘ
isSevenHoursBehindOf	Coordinated Universal Time NERFINISHED ⓘ
isTwoHoursBehindOf	Eastern Standard Time NERFINISHED ⓘ
isUsedByJurisdiction	Mexican state of Sonora NERFINISHED ⓘ Yukon Territory (post‑2020 policy) ⓘ
isUsedByJurisdiction	State of Arizona (except Navajo Nation) NERFINISHED ⓘ
isUsedFor	regions that do not change clocks seasonally ⓘ
isUsedInCountry	Canada ⓘ United States of America ⓘ surface form: United States
isUsedInRegion	Baja California Sur, Mexico (non‑DST parts) NERFINISHED ⓘ Chihuahua, Mexico (non‑DST parts) NERFINISHED ⓘ Nayarit, Mexico (non‑DST parts) NERFINISHED ⓘ Sinaloa, Mexico (non‑DST parts) ⓘ Sonora, Mexico NERFINISHED ⓘ Yukon, Canada NERFINISHED ⓘ most of Arizona, United States ⓘ parts of Saskatchewan, Canada ⓘ some areas of British Columbia, Canada ⓘ some areas of Northwest Territories, Canada ⓘ some areas of Nunavut, Canada ⓘ some border municipalities of Mexico aligned with Arizona ⓘ
observesStandardTimeYearRound	yes ⓘ
timeNotationCommonlyUsed	12‑hour clock in North America ⓘ
timeOffsetFromUTC	UTC−07:00 ⓘ
typicalClockChangePolicy	no clock changes throughout the year ⓘ
usesDaylightSavingTime	no ⓘ

How these facts were elicited