IRDT
E187911
IRDT is the daylight saving time observed in Iran, advancing clocks one hour ahead of Iran Standard Time.
All labels observed (1)
| Label | Occurrences |
|---|---|
| IRDT canonical | 17 |
How this entity was disambiguated
This entity first appeared as the object of triple T1658223 — 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: IRDT Context triple: [Iran Standard Time, DSTAbbreviation, IRDT]
-
A.
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.
-
B.
IDEP
IDEP is a regional training and research institute under the United Nations Economic Commission for Africa that focuses on economic development and planning in African countries.
-
C.
IEDL
IEDL is the standard abbreviation for IEEE Electron Device Letters, a leading peer-reviewed journal publishing short, high-impact papers on electron devices and related technologies.
-
D.
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.
-
E.
IRST
IRST (Iran Standard Time) is the time zone used throughout Iran, set 3.5 hours ahead of Coordinated Universal Time (UTC+3:30).
- 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: IRDT Target entity description: IRDT is the daylight saving time observed in Iran, advancing clocks one hour ahead of Iran Standard Time.
-
A.
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.
-
B.
IDEP
IDEP is a regional training and research institute under the United Nations Economic Commission for Africa that focuses on economic development and planning in African countries.
-
C.
IEDL
IEDL is the standard abbreviation for IEEE Electron Device Letters, a leading peer-reviewed journal publishing short, high-impact papers on electron devices and related technologies.
-
D.
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.
-
E.
IRST
IRST (Iran Standard Time) is the time zone used throughout Iran, set 3.5 hours ahead of Coordinated Universal Time (UTC+3:30).
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
daylight saving time
ⓘ
time zone ⓘ |
| abbreviation | IRDT self-link ⓘ |
| appliesToRegion |
Tehran
ⓘ
mainland Iran ⓘ |
| basedOnStandardTime | Iran Standard Time ⓘ |
| category |
Daylight saving time by country
ⓘ
Time in Iran ⓘ |
| coordinatedWith | Iranian government decrees ⓘ |
| country | Iran ⓘ |
| fullName | Iran Daylight Time ⓘ |
| historicallyObservedIn |
20th century
ⓘ
21st century ⓘ |
| languageOfAbbreviation | English ⓘ |
| observanceStatus | subject to legal changes in Iran ⓘ |
| observedInHemisphere | Northern Hemisphere ⓘ |
| offsetFromIRST | +1:00 ⓘ |
| offsetFromUTC | +4:30 ⓘ |
| offsetFromUTCInHours | 4.5 ⓘ |
| regionCode | IR ⓘ |
| relationToSolarTime | approximately 4.5 hours ahead of UTC solar time at prime meridian ⓘ |
| timeNotation | 24-hour clock ⓘ |
| timeZoneDatabaseIdentifier |
Iran Daylight Time
ⓘ
surface form:
Asia/Tehran
|
| timeZoneGroup | Iran time ⓘ |
| typeOfClockChange | clocks advanced by one hour ⓘ |
| usedFor |
better alignment of waking hours with daylight
ⓘ
energy saving ⓘ |
| usedInJurisdiction |
Iran
ⓘ
surface form:
Islamic Republic of Iran
|
| usesSameOffsetAs | UTC+04:30 ⓘ |
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: IRDT Description of subject: IRDT is the daylight saving time observed in Iran, advancing clocks one hour ahead of Iran Standard Time.
Referenced by (17)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Iran Daylight Time