Zulu time
E49120
Zulu time is a standardized time reference used worldwide—especially in aviation, military, and navigation—corresponding to Coordinated Universal Time (UTC) and denoted by the letter "Z."
All labels observed (2)
How this entity was disambiguated
This entity first appeared as the object of triple T388589 — 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: Zulu time Context triple: [Coordinated Universal Time, ZNotationMeaning, Zulu time]
-
A.
Zulu
Zulu is a Bantu language of the Nguni group spoken primarily in South Africa and widely influential in the country’s culture and other local languages.
-
B.
Ladysmith
Ladysmith is a South African town in KwaZulu-Natal best known as a key site of the Second Boer War, particularly the famous Siege of Ladysmith.
-
C.
Sranan
Sranan is an English- and Dutch-influenced creole language spoken primarily in Suriname.
-
D.
Transvaal
Transvaal was a former Boer republic and later British colony in what is now northeastern South Africa, central to the conflicts and politics of the late 19th and early 20th centuries.
-
E.
Quartz Africa
Quartz Africa is a regional edition of the digital news outlet Quartz that focuses on business, technology, and innovation stories from across the African continent.
- 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: Zulu time Target entity description: Zulu time is a standardized time reference used worldwide—especially in aviation, military, and navigation—corresponding to Coordinated Universal Time (UTC) and denoted by the letter "Z."
-
A.
Zulu
Zulu is a Bantu language of the Nguni group spoken primarily in South Africa and widely influential in the country’s culture and other local languages.
-
B.
Ladysmith
Ladysmith is a South African town in KwaZulu-Natal best known as a key site of the Second Boer War, particularly the famous Siege of Ladysmith.
-
C.
Sranan
Sranan is an English- and Dutch-influenced creole language spoken primarily in Suriname.
-
D.
Transvaal
Transvaal was a former Boer republic and later British colony in what is now northeastern South Africa, central to the conflicts and politics of the late 19th and early 20th centuries.
-
E.
Quartz Africa
Quartz Africa is a regional edition of the digital news outlet Quartz that focuses on business, technology, and innovation stories from across the African continent.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
time reference
ⓘ
time standard ⓘ |
| abbreviation |
Coordinated Universal Time
ⓘ
surface form:
UTC
|
| alsoKnownAs |
Z time
ⓘ
Zulu ⓘ Zulu time ⓘ
surface form:
Zulu hour
|
| appliesTo | all longitudes ⓘ |
| avoids |
confusion between time zones
ⓘ
daylight saving time ambiguity ⓘ |
| basisFor |
coordinated international operations
ⓘ
global timestamping in computing ⓘ |
| category |
Military terminology
ⓘ
Time in aviation ⓘ Time standards ⓘ |
| correspondsTo | Coordinated Universal Time ⓘ |
| definedBy |
International Civil Aviation Organization
ⓘ
International Telecommunication Union ⓘ |
| independentOf |
daylight saving time rules
ⓘ
local time zones ⓘ |
| letterZMeaning | Zulu in the NATO phonetic alphabet ⓘ |
| notationExample |
1200Z
ⓘ
2025-03-04T12:00Z ⓘ |
| referenceMeridian |
Prime Meridian
ⓘ
surface form:
Prime Meridian at Greenwich
|
| relatedTo | Greenwich Mean Time ⓘ |
| standardizedIn |
ISO 8601
ⓘ
surface form:
ISO 8601 time format
|
| timeOffsetFromUTC | +00:00 ⓘ |
| timeZoneDesignationType | military time zone ⓘ |
| timeZoneLetter | Z ⓘ |
| usedBy |
NATO land forces
ⓘ
surface form:
NATO forces
global shipping companies ⓘ international airlines ⓘ meteorological agencies ⓘ space agencies ⓘ |
| usedFor |
air traffic control
ⓘ
flight planning ⓘ global time coordination ⓘ logbook entries ⓘ military mission timing ⓘ navigation charts ⓘ weather reports ⓘ |
| usedIn |
amateur radio
ⓘ
aviation ⓘ maritime navigation ⓘ meteorology ⓘ military operations ⓘ space operations ⓘ |
| usesLetterDesignation | Z ⓘ |
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: Zulu time Description of subject: Zulu time is a standardized time reference used worldwide—especially in aviation, military, and navigation—corresponding to Coordinated Universal Time (UTC) and denoted by the letter "Z."
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Zulu hour