al-Hilal — Rawzat

al-Hilal — The Crescent Moon: Islamic Time-Keeping and the Spiritual Dimensions of the Lunar Calendar

الهِلَالُ — التَّقوِيمُ الإِسلَامِيُّ وَالأَبعَادُ الرُّوحِيَّةُ لِلشَّهرِ القَمَرِيّ

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Al-Hilal (الهِلَال — the crescent moon, the new moon; the thin sliver of the moon visible on the first or second night of the lunar month; from *h-l-l* meaning to become visible/to shine; the hilal is the Islamic calendar's fundamental unit — each month begins with the sighting of the new crescent and ends 29 or 30 nights later) is the Quranic basis of Islamic time-keeping. *'They ask you about the new moons (al-ahilla — plural of hilal). Say: They are measurements of time for the people and for Hajj.'* (2:189) — the Quran's explicit designation of the lunar calendar as divinely ordained. The Islamic calendar (*al-taqwim al-hijri*) is purely lunar (not lunisolar like the Hebrew calendar) — 12 lunar months of 29 or 30 days each, giving a 354-day year that shifts through the solar seasons on a 33-year cycle. The theological significance of the hilal: in a world of precise astronomical calculation, the traditional requirement of naked-eye (*ru'yat al-'ayn*) hilal sighting has remained a live fiqhi controversy — most Sunni schools require actual sighting, while some allow astronomical calculation. The Bohra community follows the Da'i's announcement of hilal — the Da'i's authority in determining the community calendar is an expression of walayah in the domain of time: the Imam's representative calibrates the community's sacred time, binding the ummat al-dawat's observances together across the global diaspora.

The Islamic Lunar Calendar

The 12 months: The Quran establishes the lunar year as 12 months: ‘Indeed, the number of months with Allah is twelve [lunar] months in the register of Allah [from] the day He created the heavens and the earth.’ (9:36). The 12 months in order: Muharram, Safar, Rabi’ al-Awwal, Rabi’ al-Thani, Jumada al-Ula, Jumada al-Akhira, Rajab, Sha’ban, Ramadan, Shawwal, Dhul-Qa’da, Dhul-Hijja. Four of these are ashhurun hurum (sacred months) in which warfare is prohibited: Muharram, Rajab, Dhul-Qa’da, Dhul-Hijja.

Hilal sighting jurisprudence: The classical fiqhi rule — ‘Fast when you see [the crescent] and break the fast when you see [it]’ (Bukhari/Muslim) — requires actual sighting. The controversy: (1) What counts as sufficient sighting (one witness? two? a city? a country?); (2) Can astronomical calculation (hisab) replace naked-eye sighting? Modern Muslim communities have settled this controversy differently — some unified by calculation (Saudi Arabia’s Umm al-Qura calendar), some requiring local sighting, some following a central authority’s announcement.

The Ismaili Bohra Calendar Authority

The Da’i’s announcement: In the Dawoodi Bohra community, the Da’i al-Mutlaq (or his authorized representatives) announces the beginning of each Islamic month — particularly Ramadan, Eid al-Fitr, Eid al-Adha, and Muharram. This announcement is binding on the community worldwide: Bohras in different countries follow the Da’i’s calendar rather than local moonsighting authorities. This unity of observance — Eid on the same day from Mumbai to Chicago — is an expression of the community’s walayah to the Da’i.

The hilal as batin symbol: The crescent’s monthly cycle is a natural ta’wil template: waxing (growth of ‘ilm), full moon (marifat’s completeness), waning (the test of sitr), new moon (hiddenness before manifestation). The hilal sighting that begins Ramadan is the zahir signal of the month of inner intensification — the moon’s crescent mirrors the heart’s opening to divine light.

al-Hilal — The Crescent Moon: Islamic Time-Keeping and the Spiritual Dimensions of the Lunar Calendar

The Islamic Lunar Calendar

The Ismaili Bohra Calendar Authority

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