Is it permissible to adopt the Gregorian calendar in transactions and budgeting for Islamic offices located in countries that only use it, due to the necessity required for governmental transactions, budget setting, salary payments, and financial reporting, while believing in the importance of the Hijri calendar and its status as a symbol for Muslims?
There is no harm in combining the Hijri and Gregorian dates, with the Hijri given precedence, because it relies on the visible lunar months, and because Islamic Sharia has considered the Arabic months in matters of worship. Giving precedence to the Hijri date is a manifestation of the rituals of Islam.
Summarized from the full answer at Ftawy · reviewed Sep 2, 2026
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