IRST
E169067
IRST (Iran Standard Time) is the time zone used throughout Iran, set 3.5 hours ahead of Coordinated Universal Time (UTC+3:30).
All labels observed (1)
| Label | Occurrences |
|---|---|
| IRST canonical | 47 |
How this entity was disambiguated
This entity first appeared as the object of triple T1479961 — 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: IRST Context triple: [Kish Island, locatedInTimeZone, IRST]
-
A.
IER
IER is a division of the U.S. Department of Justice that enforces federal laws protecting immigrants and other workers from employment discrimination based on citizenship or immigration status and national origin.
-
B.
IRT
IRT is a major division of the New York City Subway system that operates the numbered (1–7) train lines, originally built by the Interborough Rapid Transit Company.
-
C.
FIRST
FIRST (For Inspiration and Recognition of Science and Technology) is an international youth organization that runs robotics competitions and programs to inspire students’ interest and participation in science, technology, engineering, and math.
-
D.
IST
IST is the three-letter IATA airport code for Istanbul Airport, the main international gateway serving Istanbul, Turkey.
-
E.
IST
IST is the time zone used across India, corresponding to UTC+5:30 and commonly referred to as Indian Standard Time.
- 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: IRST Target entity description: IRST (Iran Standard Time) is the time zone used throughout Iran, set 3.5 hours ahead of Coordinated Universal Time (UTC+3:30).
-
A.
IER
IER is a division of the U.S. Department of Justice that enforces federal laws protecting immigrants and other workers from employment discrimination based on citizenship or immigration status and national origin.
-
B.
IRT
IRT is a major division of the New York City Subway system that operates the numbered (1–7) train lines, originally built by the Interborough Rapid Transit Company.
-
C.
FIRST
FIRST (For Inspiration and Recognition of Science and Technology) is an international youth organization that runs robotics competitions and programs to inspire students’ interest and participation in science, technology, engineering, and math.
-
D.
IST
IST is the three-letter IATA airport code for Istanbul Airport, the main international gateway serving Istanbul, Turkey.
-
E.
IST
IST is the time zone used across India, corresponding to UTC+5:30 and commonly referred to as Indian Standard Time.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
daylight saving time
ⓘ
time zone ⓘ |
| abbreviation | IRDT ⓘ |
| appliesToTimeZone | Iran Standard Time ⓘ |
| countryUsedIn | Iran ⓘ |
| DSTVariant | Iran Daylight Time ⓘ |
| fullName | Iran Standard Time ⓘ |
| hasHalfHourOffset | true ⓘ |
| IANAZoneIdentifier |
Asia/Tehran
ⓘ
linked to:
Iran Standard Time
|
| observedBy |
government of Iran
ⓘ
linked to:
Government of Iran
residents of Iran ⓘ |
| observedIn |
Islamic Republic of Iran
ⓘ
linked to:
Iran
|
| offsetFromUTCInMinutes | 210 ⓘ |
| offsetReference | UTC+03:30 ⓘ |
| principalCity | Tehran ⓘ |
| region | Asia ⓘ |
| representsTimeZone | Iran Standard Time ⓘ |
| shortName | IRST ⓘ |
| standardTimeOf | Iran ⓘ |
| timeNotation | 24-hour clock (commonly used) ⓘ |
| timeStandardReference | Coordinated Universal Time ⓘ |
| timeZone | Iran Standard Time ⓘ |
| timeZoneAbbreviation | IRST ⓘ |
| usedFor | civil time in Iran ⓘ |
| usedOnMainland | entire territory of Iran ⓘ |
| UTCOffset |
+03:30
ⓘ
+04:30 ⓘ |
| UTCOffsetHours |
3.5
ⓘ
4.5 ⓘ |
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: IRST Description of subject: IRST (Iran Standard Time) is the time zone used throughout Iran, set 3.5 hours ahead of Coordinated Universal Time (UTC+3:30).
Referenced by (47)
Full triples — surface form annotated when it differs from this entity's canonical label.