Jalali calendar
E131568
The Jalali calendar is a highly accurate solar calendar developed in 11th-century Persia under the guidance of polymath Omar Khayyam and used as a basis for the modern Iranian calendar.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Solar Hijri calendar | 3 |
| Iranian calendar | 2 |
| Afghan calendar | 1 |
| Jalali calendar canonical | 1 |
| Malik-Shahi calendar | 1 |
| modern Solar Hijri calendar | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1148827 — 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: Jalali calendar Context triple: [Omar Khayyam, calendarContribution, Jalali calendar]
-
A.
Hebrew calendar
The Hebrew calendar is a lunisolar calendar used primarily for Jewish religious observances, holidays, and the determination of ceremonial dates.
-
B.
Israeli civil calendar
The Israeli civil calendar is the official calendar system used in Israel that combines the Gregorian and Hebrew calendars to schedule national holidays, memorial days, and public life.
-
C.
Revised Julian calendar
The Revised Julian calendar is a modernized version of the traditional Julian calendar, adopted by several Eastern Orthodox Churches to more closely align fixed feast dates with the Gregorian calendar while retaining the Orthodox Paschalion.
-
D.
Hindu lunisolar calendar
The Hindu lunisolar calendar is a traditional timekeeping system used across the Indian subcontinent that combines lunar months with solar years to determine religious festivals, rituals, and regional New Year dates.
-
E.
Javanese calendar
The Javanese calendar is a traditional lunisolar timekeeping system from Java that blends indigenous, Islamic, and Hindu-Buddhist elements and is used to mark cultural and religious events.
- 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: Jalali calendar Target entity description: The Jalali calendar is a highly accurate solar calendar developed in 11th-century Persia under the guidance of polymath Omar Khayyam and used as a basis for the modern Iranian calendar.
-
A.
Hebrew calendar
The Hebrew calendar is a lunisolar calendar used primarily for Jewish religious observances, holidays, and the determination of ceremonial dates.
-
B.
Israeli civil calendar
The Israeli civil calendar is the official calendar system used in Israel that combines the Gregorian and Hebrew calendars to schedule national holidays, memorial days, and public life.
-
C.
Revised Julian calendar
The Revised Julian calendar is a modernized version of the traditional Julian calendar, adopted by several Eastern Orthodox Churches to more closely align fixed feast dates with the Gregorian calendar while retaining the Orthodox Paschalion.
-
D.
Hindu lunisolar calendar
The Hindu lunisolar calendar is a traditional timekeeping system used across the Indian subcontinent that combines lunar months with solar years to determine religious festivals, rituals, and regional New Year dates.
-
E.
Javanese calendar
The Javanese calendar is a traditional lunisolar timekeeping system from Java that blends indigenous, Islamic, and Hindu-Buddhist elements and is used to mark cultural and religious events.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
Persian calendar
ⓘ
historical calendar ⓘ solar calendar ⓘ |
| accuracyComparedToTropicalYear | very high ⓘ |
| alsoKnownAs |
Jalali calendar
ⓘ
surface form:
Malik-Shahi calendar
|
| basisOfLeapYears | solar observations ⓘ |
| calculationMethod | observational astronomy ⓘ |
| calendarFamily | Iranian calendars ⓘ |
| calendarStructure | solar months aligned with zodiac signs ⓘ |
| calendarType | solar ⓘ |
| commissionedBy | Malik Shah I ⓘ |
| comparedWith |
Gregorian calendar (Western churches)
ⓘ
surface form:
Gregorian calendar
|
| countryOfOrigin | Persia ⓘ |
| describedIn | medieval Persian astronomical texts ⓘ |
| developedBy |
Abd al-Rahman al-Khazini
ⓘ
Omar Khayyam ⓘ a group of Persian astronomers ⓘ |
| developedInCentury | 11th century ⓘ |
| developedUnderGuidanceOf | Omar Khayyam ⓘ |
| distinguishedBy |
astronomical precision
ⓘ
irregular leap-year pattern ⓘ |
| epoch | Hijra ⓘ |
| eraName | Jalali era ⓘ |
| hasProperty |
among the most accurate pre-modern calendars
ⓘ
more accurate than Julian calendar ⓘ |
| historicalPeriodOfUse |
12th century
ⓘ
late 11th century ⓘ |
| inception | 1079 ⓘ |
| influenced |
Jalali calendar
self-linksurface differs
ⓘ
surface form:
Afghan calendar
modern Iranian calendar ⓘ |
| introducedAt | Isfahan ⓘ |
| introducedBy |
Seljuk institutions
ⓘ
surface form:
Seljuk court
|
| leapYearRule | empirical astronomical observation ⓘ |
| namedAfter |
Malik Shah I
ⓘ
surface form:
Jalal al-Din Malik Shah I
|
| namedForTitleOf | Sultan Malik Shah I ⓘ |
| predecessor | Islamic lunar calendar ⓘ |
| region | Greater Iran ⓘ |
| successor |
Jalali calendar
self-linksurface differs
ⓘ
surface form:
modern Solar Hijri calendar
|
| timeKeepingBasis | solar year ⓘ |
| usedAsBasisFor |
Jalali calendar
self-linksurface differs
ⓘ
surface form:
Iranian calendar
Jalali calendar self-linksurface differs ⓘ
surface form:
Solar Hijri calendar
|
| usedFor |
administrative records
ⓘ
civil purposes ⓘ tax collection ⓘ |
| usedIn |
Persia
ⓘ
Seljuk Empire ⓘ |
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: Jalali calendar Description of subject: The Jalali calendar is a highly accurate solar calendar developed in 11th-century Persia under the guidance of polymath Omar Khayyam and used as a basis for the modern Iranian calendar.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Iranian calendar
this entity surface form:
Solar Hijri calendar
this entity surface form:
Afghan calendar
this entity surface form:
Malik-Shahi calendar
this entity surface form:
modern Solar Hijri calendar
this entity surface form:
Iranian calendar
this entity surface form:
Solar Hijri calendar
this entity surface form:
Solar Hijri calendar