Helaical rising of the new moon as a precursor of the beginning of Hegri lunar month
Galal, A., Rashed, M. (2012). Helaical rising of the new moon as a precursor of the beginning of Hegri lunar month. EKB Journal Management System, 1(2), 156-158. doi: 10.1016/j.nrjag.2012.12.011
A.A. Galal; M.G. Rashed. "Helaical rising of the new moon as a precursor of the beginning of Hegri lunar month". EKB Journal Management System, 1, 2, 2012, 156-158. doi: 10.1016/j.nrjag.2012.12.011
Galal, A., Rashed, M. (2012). 'Helaical rising of the new moon as a precursor of the beginning of Hegri lunar month', EKB Journal Management System, 1(2), pp. 156-158. doi: 10.1016/j.nrjag.2012.12.011
Galal, A., Rashed, M. Helaical rising of the new moon as a precursor of the beginning of Hegri lunar month. EKB Journal Management System, 2012; 1(2): 156-158. doi: 10.1016/j.nrjag.2012.12.011

Helaical rising of the new moon as a precursor of the beginning of Hegri lunar month

NRIAG Journal of Astronomy and Geophysics
Volume 1, Issue 2, December 2012, Pages 156-158    PDF (352.22 K)
DOI: 10.1016/j.nrjag.2012.12.011
Authors
A.A. Galal; M.G. Rashed
Abstract
The dependence of the helical setting of the new crescent on its helical rising on the day of conjunction is studied. The data for a complete 33-cycle are used for this propose. The relation indicates general tendency of increasing the positive duration of the crescent lag as a function of its helical rising. It shows an evident seasonal variation depending on the declination of the Sun.
More frequent positive durations of the crescent lag after Sunset on the day of conjunction occurs in the spring and summer solstice and vice versa in the autumn and winter solstice. The ratio of the monthly frequency of the positive duration across the examined cycle varies at various months across the cycle ranging from higher value (69.697%) in March to the lower value (44.117%) in January.
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