NSTimeZone
E820433
NSTimeZone is a Foundation framework class in Apple's platforms that encapsulates time zone information used for date and time calculations and conversions.
All labels observed (3)
| Label | Occurrences |
|---|---|
| NSTimeZone canonical | 2 |
| TimeZone (Swift) | 1 |
| java.util.TimeZone | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9761749 — 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: NSTimeZone Context triple: [NSDate, relatedClass, NSTimeZone]
-
A.
Time Zone API
Time Zone API is a Google Maps web service that provides time zone information for specified locations based on geographic coordinates.
-
B.
Zone System
The Zone System is a photographic technique for controlling exposure and development to achieve precise tonal range and image detail, widely used in black-and-white photography.
-
C.
North American time zones
North American time zones are the standardized regional time divisions used across countries in North America, including zones such as Eastern, Central, Mountain, and Pacific Time.
-
D.
Zone Information Protocol
Zone Information Protocol is a network protocol used in AppleTalk to manage and distribute information about logical groupings of devices, known as zones, within an AppleTalk internetwork.
-
E.
Yukon Time Zone
The Yukon Time Zone is a North American time zone used primarily in Canada's Yukon territory, aligning year-round with Pacific Daylight 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: NSTimeZone Target entity description: NSTimeZone is a Foundation framework class in Apple's platforms that encapsulates time zone information used for date and time calculations and conversions.
-
A.
Time Zone API
Time Zone API is a Google Maps web service that provides time zone information for specified locations based on geographic coordinates.
-
B.
Zone System
The Zone System is a photographic technique for controlling exposure and development to achieve precise tonal range and image detail, widely used in black-and-white photography.
-
C.
North American time zones
North American time zones are the standardized regional time divisions used across countries in North America, including zones such as Eastern, Central, Mountain, and Pacific Time.
-
D.
Zone Information Protocol
Zone Information Protocol is a network protocol used in AppleTalk to manage and distribute information about logical groupings of devices, known as zones, within an AppleTalk internetwork.
-
E.
Yukon Time Zone
The Yukon Time Zone is a North American time zone used primarily in Canada's Yukon territory, aligning year-round with Pacific Daylight Time.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
Foundation class
ⓘ
Objective-C class ⓘ time zone abstraction ⓘ |
| abbreviationExample |
CEST
ⓘ
PST ⓘ |
| bridgedTo |
TimeZone (Swift)
ⓘ
linked to:
NSTimeZone
|
| conformsTo |
NSCopying
ⓘ
NSSecureCoding ⓘ |
| definedInFramework | Foundation ⓘ |
| hasClassMethod |
abbreviationDictionary
ⓘ
defaultTimeZone ⓘ knownTimeZoneNames ⓘ localTimeZone ⓘ systemTimeZone ⓘ timeZoneForSecondsFromGMT: ⓘ timeZoneWithAbbreviation: ⓘ timeZoneWithName: ⓘ |
| hasInstanceMethod |
abbreviation
ⓘ
data ⓘ daylightSavingTimeOffset ⓘ daylightSavingTimeOffsetForDate: ⓘ isDaylightSavingTime ⓘ isDaylightSavingTimeForDate: ⓘ localizedName:locale: ⓘ name ⓘ nextDaylightSavingTimeTransition ⓘ nextDaylightSavingTimeTransitionAfterDate: ⓘ secondsFromGMT ⓘ secondsFromGMTForDate: ⓘ |
| identifierExample |
America/Los_Angeles
ⓘ
Europe/Berlin ⓘ |
| identifierFormat | Olson time zone ID ⓘ |
| introducedIn |
iOS 2.0
ⓘ
linked to:
iPhone OS 2.0
macOS 10.0 ⓘ |
| platform |
Apple platforms
ⓘ
iOS ⓘ macOS ⓘ tvOS ⓘ watchOS ⓘ |
| purpose |
encapsulate time zone information
ⓘ
support date and time calculations ⓘ support time zone conversions ⓘ |
| superclass | NSObject ⓘ |
| supports |
Daylight Saving Time
ⓘ
IANA time zone identifiers ⓘ abbreviation-based time zones ⓘ |
| threadSafety |
instances are immutable
ⓘ
instances are thread-safe ⓘ |
| usedWith |
NSCalendar
ⓘ
NSDate ⓘ NSDateFormatter ⓘ |
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: NSTimeZone Description of subject: NSTimeZone is a Foundation framework class in Apple's platforms that encapsulates time zone information used for date and time calculations and conversions.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: NSTimeZone
linked to: NSTimeZone