There are many books dealing with this specialized subject, but when the author engaged himself in this work he found from his study and experience that the Conversion Tables in circulation are not very comprehensive and suffered mainly from two shortcomings-inaccuracy and intricacy. His work tries to rectify both. This Compendium consists of three main parts: Part I, illustrates the method of synchronizing Hijrah datres with the Gregorian dates from 506 A.D. (120B.H.) onwards. Part II, deals with the computation of the Pre-Hijrah dates from 60 B.H. to 1 B.H. (564-621 A.D.), and Post –Hijrah dates from 1 A.H. (622 A.D.) onwards into Julian and Gregorian Calendar dates with the help of the formulas. Part III, outlines the mathematical method of calculation of Gregorian dates from 641 B.H. to 1 B.H. (1 A.D. – 621 A.D.), and the Post-Hijrah dates from 1 A.H. (622 A.D.) ONWARDS INTO Julian and Gregorian Calendar dates, and can also show the day of the week of any date of Pre-Hijrah, Post-Hijrah, Julian and Gregorian Calendars with the help of infinite Calendars. This Compendium of the conversion of the Muslim and Christian dates is an encyclopaedic work yet compiled and has been prepared after considerable study and labour with hope that it will be useful to students and scholars, as well as laymen alike.
ABOUT THE AUTHOR Shahabuddin Ansari
Shahabuddin Ansari having gained an M.A. degree in English in 1978 started writing articles on Islamic matters, specially on Islamic Calendar published in India and abroad. His initial leaning has been towards studying various dating systems. So, since various calendrical systems and tried to evolve a simple and easy method of presenting Christian, Indian National (Saka Sambat) and Hijrah Calendars and method of conversion of dates. For this cause he devoted a period of more than ten years and could complete three volumes – the Compendium of Calendars; Conversion Tables and An Easy Method of Interchanging Hijrah and Christian Dates. So far a series of articles, exclusively based on these volumes have appeared in the MWL Journal, Saudi Arabia; Hamdard Islamicus, Pakistan and Islamic Culture, Hyderabad. Moreover, the author has been associated International Islamic Calendar Programme (IICP), conducted by Associate Prof. Dr. Mohammed Ilyas, Astronomical Research Unit, University of Malaysia. In 1989, the author got a chance to participate in a Conference-cum-Workshop on Internationalisation of Islamic Calendar held at jamia Hamdard, New Delhi, convened by Dr. Mohammed Ilyas. The author is also an ordinary member of the Muslim association for the Advancement of Science, Aligarh. In June 1994, he was invited to participate in a Science Oriented Camp held at Khandala, Pune. In 1997, he was chosen for his distinguished standing and has been conferred with an Honorary appointment to the Reserch Board of Advisers by the Governing Board of Editors, and Publications Board of the American Biographical Institute, Raleigh, North Carolina, USA. The author is also an Editor of Weekly Al-Hijr. Amongst his varied activities he is also a bibliophile.
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