Tsarin aiki da lokaci a Daular Khilafah shi ne kalandar Hijira. Shekarar Hijira tana ƙunshe da kwanaki 354, daga ciki an ware kwanaki 3 don ranakun Idin Al-Fitr mai albarka da kwanaki bakwai don Idin Al-Adha. Don haka kwanaki 344 ne suka rage a raba su tsakanin lokutan karatu guda 4, kamar yadda ya bayyana a cikin tsarin da ke biye:

The system of work and time in the Khilafah State is the Hijri calendar. The Hijri year is composed of 354 days with 3 days set aside for the days of the blessed Eid Al-Fitr and seven days for Eid Al-Adha. Thus 344 days remain to be divided between the 4 school terms as shown in the following chart:

Karatun makaranta na farko yana farawa a ranar farko ta watan Muharram Al-Haram kowace shekara, na tsawon kwanaki 83, ciki har da ranakun Juma'a da suka faɗa cikin wannan lokaci; haka kuma ya haɗa da lokacin jarrabawar ƙarshe na wannan zangon. Saboda haka karatun yana ƙarewa bayan kwanaki 83 daga farawarsa. Sannan karatun na gaba yana farawa bayan hutun kwanaki 3 a ƙarshen zangon da ya gabata.

The first school course commences on the first day of Muharram Al-Haram every year for a period of 83 days including the Fridays occurring in that period; it also includes the final examination period of that term. The course therefore ends after 83 days from its start. Then the next course commences after a holiday of 3 days at the end of the previous term.

Kashi na huɗu yana da daraja ta musamman domin ya ƙunshi watan Ramadan da kuma ranakun albarka na Idi ƙaramar Sallah (Idi al-Fitr) da Babbar Sallah (Idi al-Adha). Wasu ɗalibai ko malamai na iya ɗaukar dukan kashin a matsayin hutu domin su gudanar da farali na Hajji, ko Umrah, ko su yi tafiya. Wasu kuma na iya gudanar da farali na Hajji a hutun Idi al-Adha mai albarka, wanda yana da kwanaki bakwai gaba ɗaya.

The fourth term is a distinguished one as it includes the month of Ramadhan as well as blessed days of the Eids of Al-Fitr and Al-Adha. Some students or teachers may take the whole term as a holiday to perform the obligation of Hajj, or Umrah or to travel. Some may also perform the obligation of Hajj in the holiday of the blessed Eid Al-Adha which totals 7 days.