| gptkbp:instanceOf | gptkb:event 
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                                | gptkbp:alsoKnownAs | gptkb:Islamic_calendar gptkb:Hijri_calendar
 
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                                | gptkbp:alternativeCalculation | gptkb:tabular_Islamic_calendar 
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                                | gptkbp:basisFor | Islamic religious observances 
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                                | gptkbp:calendar | gptkb:Anno_Hegirae_(AH) 
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                                | gptkbp:determines | moon sighting 
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                                | gptkbp:epoch | gptkb:Hijra_of_Muhammad_from_Mecca_to_Medina 
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                                | gptkbp:governingBody | Islamic scholars 
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                                | gptkbp:leapYearFrequency | 11 leap years in a 30-year cycle 
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                                | gptkbp:leapYearMonth | gptkb:Dhu_al-Hijjah 
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                                | gptkbp:leapYearMonthLength | 30 days 
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                                | gptkbp:length | 354 or 355 days 
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                                | gptkbp:monthHeld | gptkb:Dhu_al-Hijjah gptkb:Muharram
 
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                                | gptkbp:monthNames | 12 
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                                | gptkbp:notSynchronizedWith | gptkb:Gregorian_calendar 
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                                | gptkbp:officialCalendarIn | gptkb:Afghanistan gptkb:Saudi_Arabia
 Iran (for religious purposes)
 
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                                | gptkbp:region | Islamic world 
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                                | gptkbp:regularMonthLength | 29 or 30 days 
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                                | gptkbp:relatedTo | gptkb:Gregorian_calendar gptkb:Solar_Hijri_calendar
 Umm al-Qura calendar
 
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                                | gptkbp:releaseDate | 622 CE 
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                                | gptkbp:type | gptkb:event 
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                                | gptkbp:usedBy | gptkb:Muslims 
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                                | gptkbp:usedFor | determining Hajj determining Ramadan
 determining Islamic holidays
 Islamic civil purposes
 Islamic legal purposes
 
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                                | gptkbp:bfsParent | gptkb:Javanese_calendar 
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                                | gptkbp:bfsLayer | 8 
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                                | https://www.w3.org/2000/01/rdf-schema#label | Islamic Hijri calendar 
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