Dhu'l-Qi'dah, Dhu'l-Qa'dah, or alternatively Zulqida (Arabic: ذو القعدة, also transliterated Ḏū l-Qaʿdah, IPA: [ðʊlˈqɑʕda]) is the eleventh month in the Islamic calendar. It is one of the four sacred months in Islam during which warfare is prohibited, hence the name "Master of Truce".
The most correct and most traditionally widespread transliteration of the month according to the thirteenth century Syrian jurist al-Nawawi is Dhu'l Qa'dah. Al-Nawawi also mentions that a smaller group of linguists allow the transliteration Dhu'l-Qi'dah, however. In modern times, it is most commonly referred to as Dhu'l Qi'dah although this is neither linguistically nor historically the strongest position.
The Islamic calendar is a lunar calendar, and months begin when the first crescent of a new moon is sighted. Since the Islamic lunar calendar year is 11 to 12 days shorter than the tropical year, Dhu'l-Qi'dah migrates throughout the seasons. The estimated start and end dates for Dhu'l-Qi'dah, based on the Umm al-Qura calendar of Saudi Arabia, are:
|AH||First day (CE / AD)||Last day (CE / AD)|
|1437||4 August 2016||1 September 2016|
|1438||24 July 2017||22 August 2017|
|1439||14 July 2018||11 August 2018|
|1440||4 July 2019||1 August 2019|
|1441||22 June 2020||21 July 2020|
|1442||11 June 2021||10 July 2021|
|Dhu'l-Qi'dah dates between 2016 and 2021|
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- 5 AH, the Muslims took part in the Battle of the Trench
- 6 AH, Truce of Hudaubiyah
- 6 AH, Pledge of the Tree
- 7 AH, The first pilgrimage - the return to Mecca for the performance of Umrah by Muhammad and his Companions
- 1 Dhu'l-Qi'dah, Birth anniversary of Fātimah bint Mūsā
- 1 Dhu'l-Qi'dah, Treaty of Hudaybiyyah
- 8 Dhu'l-Qi'dah, Hajj was made incumbent upon Muslims in 8 A.H.
- 11 Dhu'l-Qi'dah, Birth anniversary of Ali al-Ridha, the eighth Twelver Imam
- 18 Dhu'l-Qi'dah, The event of Ghadir Khumm in 10 A.H.
- 23 Dhu'l-Qi'dah, martyrdom of Ali al-Ridha according to one tradition
- 25 Dhu'l-Qi'dah, Arabic: يوم دحو الارض, the day earth was laid beneath Ka'ba and birth date of Ibrahim and Jesus.
- 29 Dhu'l-Qi'dah, martyrdom of Muhammad al-Jawad, the ninth Twelver Imam