NSDate
E236685
NSDate is an Objective-C class in Apple’s Foundation framework that represents a specific point in time for use in macOS and iOS applications.
All labels observed (1)
| Label | Occurrences |
|---|---|
| NSDate canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T2142763 — 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: NSDate Context triple: [NeXTSTEP Foundation Kit, defines, NSDate]
-
A.
Date
Date is an HTTP header field that indicates the date and time at which the message was originated, formatted according to internet date/time standards.
-
B.
The Calendar
"The Calendar" is a crime thriller play by Edgar Wallace that blends mystery and melodrama around horse racing and high society intrigue.
-
C.
ISO 8601
ISO 8601 is an international standard that defines a consistent, unambiguous format for representing dates, times, and related data in numeric form.
-
D.
Conway’s Doomsday algorithm
Conway’s Doomsday algorithm is a mental calculation method devised by mathematician John Horton Conway for quickly determining the day of the week for any given date.
-
E.
Niue Time
Niue Time is the standard time observed in the island nation of Niue, a small self-governing state in free association with New Zealand in the South Pacific Ocean.
- 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: NSDate Target entity description: NSDate is an Objective-C class in Apple’s Foundation framework that represents a specific point in time for use in macOS and iOS applications.
-
A.
Date
Date is an HTTP header field that indicates the date and time at which the message was originated, formatted according to internet date/time standards.
-
B.
The Calendar
"The Calendar" is a crime thriller play by Edgar Wallace that blends mystery and melodrama around horse racing and high society intrigue.
-
C.
ISO 8601
ISO 8601 is an international standard that defines a consistent, unambiguous format for representing dates, times, and related data in numeric form.
-
D.
Conway’s Doomsday algorithm
Conway’s Doomsday algorithm is a mental calculation method devised by mathematician John Horton Conway for quickly determining the day of the week for any given date.
-
E.
Niue Time
Niue Time is the standard time observed in the island nation of Niue, a small self-governing state in free association with New Zealand in the South Pacific Ocean.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Foundation framework class
ⓘ
Objective-C class ⓘ date and time representation class ⓘ |
| availableIn | Objective-C runtime ⓘ |
| bridgedTo | Swift Date type (via Foundation) ⓘ |
| conformsTo |
NSCoding
ⓘ
NSCopying ⓘ NSSecureCoding ⓘ |
| creationMethod |
+ date
ⓘ
+ dateWithTimeIntervalSince1970: ⓘ + dateWithTimeIntervalSinceNow: ⓘ + dateWithTimeIntervalSinceReferenceDate: ⓘ - initWithTimeIntervalSince1970: ⓘ - initWithTimeIntervalSinceNow: ⓘ - initWithTimeIntervalSinceReferenceDate: ⓘ |
| developer | Apple Inc. ⓘ |
| framework | Foundation ⓘ |
| headerFile | NSDate.h ⓘ |
| introducedIn | early versions of Cocoa / Foundation ⓘ |
| keyMethod |
- compare:
ⓘ
- dateByAddingTimeInterval: ⓘ - earlierDate: ⓘ - laterDate: ⓘ - timeIntervalSince1970 ⓘ - timeIntervalSinceDate: ⓘ - timeIntervalSinceNow ⓘ - timeIntervalSinceReferenceDate ⓘ |
| memoryManagement | reference counted (ARC or manual) ⓘ |
| module |
Foundation framework
ⓘ
surface form:
Foundation.framework
|
| platform |
iOS
ⓘ
macOS ⓘ tvOS ⓘ watchOS ⓘ |
| programmingLanguage | Objective-C ⓘ |
| referenceDate | 2001-01-01 00:00:00 UTC ⓘ |
| relatedClass |
NSCalendar
ⓘ
NSDateComponents ⓘ NSDateFormatter ⓘ NSTimeZone ⓘ |
| represents | specific point in time ⓘ |
| storesTimeAs | seconds relative to reference date ⓘ |
| superclass | NSObject ⓘ |
| threadSafety | instances are immutable and thread-safe ⓘ |
| timeZoneHandling | time zone agnostic absolute time ⓘ |
| usedFor |
date and time calculations
ⓘ
scheduling operations ⓘ time interval measurements ⓘ timestamps ⓘ |
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: NSDate Description of subject: NSDate is an Objective-C class in Apple’s Foundation framework that represents a specific point in time for use in macOS and iOS applications.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.