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Mathematical Determination for the First day of Ramadan
Samira S. Al-Harbi
Department of Astronomy, Faculty of Science King Abdulaziz University, Jeddah - Saudi Arabia
Abstract. This work is an attempt to establish a mathematical method in order to prove the historical relationship which is " The day of the week of the first of Ramadan and the day of the week of the forth of Rajab are identical", and that will provide us with a simple way to predict which day is the first of Ramadan.
Keywords: The holy month of Ramadan, Rajab, The Julian day for an Islamic date, Day of the week.
