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Are astronomical calculations permissable for Ramadhan?

Question?

Are astronomical observations and calculations acceptable for the commencement of Ramadhan etc?

Answer:

There is unanimity amongst the jurists of islam that it is not permissible to start Ramadhan with astronomical calculations.Nabi SAW said:”Start fasting when you sight the crescent and celebrate eid when you sight the crescent.” (Bukhari Shareef). therefore sighting of the moon is a pre-requisite for the commencement of Ramadhan and Shawwaal and the birth of the moon is not the criteria.

Answered by: Mufti AK Hoosen,Ustaad,Darul Uloom Newcastle,20 years.