id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajiss-2382	Shaukat, Khalid	New Moon's Visibility and International Islamic Calendar for the American Region 1407H - 1421H: By Mohammad Ilyas. Penang, Malaysia: The International Islamic Calendar Programme, n.d.	1995.0	6	.pdf	application/pdf	2388	109	58	The scientific and research work needed for visibility calculations requires the collection of moon-sighting information on a global scale and its subsequent analysis according to the calculable parameters asso­ ciated with the crescent moon that affect visibility. In passing, it may be mentioned that the criterion takes account of Book Reviews such important variables as: moon's distance from the earth; cres­ cent's width and light intensity; brightness of the sky near western horizon at sunset; lunar mountains shadowing effect; atmospheric refraction effect; human eye's role as a detector of contrast.	cache/ajiss-2382.pdf	txt/ajiss-2382.txt