@article{UNY11520,
          author = {Ramadhan T. B. and Djamaluddin T. and Utama J. A.},
           title = {RE-EVALUATION OF HILAAL VISIBILITY CRITERIA
IN INDONESIA BY USING INDONESIA AND INTERNATIONAL
OBSERVATIONAL DATA},
           month = {May},
         journal = {Proceeding of International Conference On Research, Implementation And Education Of Mathematics And Sciences 2014},
            year = {2014},
       publisher = {Yogyakarta State University},
             url = {http://eprints.uny.ac.id/11520/},
        keywords = {Hilaal, Hisab, Rukyat, Hilaal Visibility Criteria in Indonesia.},
        abstract = {This study using data of hilaal observation compiled by the Ministry of Religious
Affairs (MORA) Republic of Indonesia during 1962-2011 period, the observational
data of Rukyatul Hilal Indonesia (RHI) during 2007-2009 period and Odeh?s
international observational data during 1859-2005 period. Those data were selected
by applying selection procedure of Djamaluddin (2001) and by eliminating hilal data
whose angular distance {\ensuremath{<}} 3? between hilaal and particular planet. Next, selected data
were plotted to graphic of Sun-Moon altitude difference (ARCV - Arc of Vision) and
Sun-Moon angular distance (ARCL - Arc of Light), moon age and Sun-Moon
angular distance (ARCL - Arc of Light) and Sun-Moon altitude difference (ARCV -
Arc of Vision) and Sun-Moon angular distance (DAz - Delta Azimuth) to propose
the new hilaal visibility criteria in Indonesia. The new criteria proposed are ARCL
greater than 5.4?, Moon is as old as 9.4 hours after conjuction and
= 3? if DAz 5?
ARCV
-0.719(DAz)+6.795 if DAz {\ensuremath{<}} 5?
? ??
??
.}
}