Hijri calendar
E148311
The Hijri calendar is a lunar-based Islamic calendar used primarily to determine the dates of religious observances and events in the Muslim world.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Hijri calendar canonical | 10 |
| Islamic calendar | 10 |
| Islamic New Year | 6 |
| Anno Hegirae (AH) | 1 |
| Islamic Hijri calendar | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1289436 — 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.
Target entity: Hijri calendar Context triple: [Dhu al-Hijjah, calendarSystem, Hijri calendar]
-
A.
Jalali calendar
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.
-
B.
Hebrew calendar
The Hebrew calendar is a lunisolar calendar used primarily for Jewish religious observances, holidays, and the determination of ceremonial dates.
-
C.
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.
-
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.
Coptic calendar
The Coptic calendar is the liturgical and agricultural calendar used by the Coptic Orthodox Church, derived from the ancient Egyptian calendar and still employed in Egypt for religious feasts and seasons.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: Hijri calendar Target entity description: The Hijri calendar is a lunar-based Islamic calendar used primarily to determine the dates of religious observances and events in the Muslim world.
-
A.
Jalali calendar
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.
-
B.
Hebrew calendar
The Hebrew calendar is a lunisolar calendar used primarily for Jewish religious observances, holidays, and the determination of ceremonial dates.
-
C.
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.
-
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.
Coptic calendar
The Coptic calendar is the liturgical and agricultural calendar used by the Coptic Orthodox Church, derived from the ancient Egyptian calendar and still employed in Egypt for religious feasts and seasons.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Islamic calendar
ⓘ
calendar system ⓘ lunar calendar ⓘ |
| adoptedBy | early Muslim community in Medina ⓘ |
| alsoKnownAs |
Hijri calendar
ⓘ
surface form:
Islamic calendar
Islamic lunar calendar ⓘ
surface form:
Muslim calendar
|
| averageYearLengthDays | about 354 days ⓘ |
| basedOn | lunar cycles ⓘ |
| calculationMethod |
sometimes computed using astronomical calculations
ⓘ
traditionally based on visual moon sighting ⓘ |
| coexistsWith |
Gregorian calendar (Western churches)
ⓘ
surface form:
Gregorian calendar
|
| daysPerMonthTypical | 29 or 30 ⓘ |
| differenceFromSolarYear | about 11 days shorter ⓘ |
| doesNotUse | intercalation of months ⓘ |
| driftsRelativeTo |
Gregorian calendar (Western churches)
ⓘ
surface form:
Gregorian calendar
|
| eraStartsWith |
Hijrah of Prophet Muhammad
ⓘ
surface form:
Hijra of Prophet Muhammad from Mecca to Medina
|
| governs |
Islamic festival dates
ⓘ
fasting in Ramadan ⓘ timing of Hajj pilgrimage ⓘ |
| hasEpochEvent | Hijra ⓘ |
| hasMonth |
Dhu al-Hijjah
ⓘ
Dhu al-Qadah ⓘ
surface form:
Dhu al-Qi'dah
Jumada al-akhira ⓘ Jumada al-ula ⓘ Muharram ⓘ Rabi al-awwal ⓘ Rabi al-thani ⓘ Rajab ⓘ Ramadan ⓘ Safar ⓘ Sha'ban ⓘ Shawwal ⓘ |
| hasNotation | AH (Anno Hegirae) ⓘ |
| hasYearType | lunar year ⓘ |
| languageContext | Arabic-speaking and wider Muslim communities ⓘ |
| leapYearRule | adds an extra day to the last month in certain years ⓘ |
| monthsPerYear | 12 ⓘ |
| officialStatusIn |
Saudi Arabia
ⓘ
some other Muslim-majority countries ⓘ |
| primaryPurpose | religious observance scheduling ⓘ |
| regionOfOrigin | Arabian Peninsula ⓘ |
| startYearGregorianApprox | 622 CE ⓘ |
| usedFor |
determining Islamic New Year
ⓘ
determining Islamic religious observances ⓘ determining dates of Eid al-Adha ⓘ determining dates of Eid al-Fitr ⓘ determining dates of Hajj ⓘ determining dates of Ramadan ⓘ |
| usedIn |
Islamic religious contexts worldwide
ⓘ
Muslim world ⓘ |
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.
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.
Subject: Hijri calendar Description of subject: The Hijri calendar is a lunar-based Islamic calendar used primarily to determine the dates of religious observances and events in the Muslim world.
Referenced by (28)
Full triples — surface form annotated when it differs from this entity's canonical label.