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All Journal Al-Afaq: Jurnal Ilmu Falak dan Astronomi Astroislamica: Journal of Islamic Astronomy
M. Ihtirozun Ni'am
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Religion Astronomy Earth & Planetary Sciences Law, Crime, Criminology & Criminal Justice Social Sciences

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Konvergensi Rukyat Tarbi’ dan Badr Dengan Kriteria Imkanur Rukyat Neo MABIMS: (Praktek Penentuan Awal Bulan Kamariah di Pondok Pesantren Nurul Hidayah Garut) M. Ihtirozun Ni'am; Waliawati, Waliawati
AL - AFAQ : Jurnal Ilmu Falak dan Astronomi Vol. 4 No. 2 (2022): Desember 2022
Publisher : Universitas Islam Negeri Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/afaq.v4i2.5351

Abstract

The determination of the beginning of the lunar month has always been a hot topic of discussion, especially in the months of Ramadan, Shawwal and Zulhijah. The method used to determine the beginning of the lunar month is the reckoning and rukyat methods. The Nurul Hidayah Islamic Boarding School in determining the beginning of the lunar month is quite different from what the government does, namely rukyat tarbi' and badr. The government is currently using Imkanur Rukyat Neo MABIMS. The convergence of rukyat tarbi' and badr with Imkanur Rukyat Neo MABIMS are both methods used to determine the beginning of the lunar month. In its application, different results are obtained. Of the many factors, the most influential is the reckoning used and the standard of the height of the new moon which is quite high.
Konvergensi Rukyat Tarbi’ dan Badr Dengan Kriteria Imkanur Rukyat Neo MABIMS: (Praktek Penentuan Awal Bulan Kamariah di Pondok Pesantren Nurul Hidayah Garut) M. Ihtirozun Ni'am; Waliawati, Waliawati
AL - AFAQ : Jurnal Ilmu Falak dan Astronomi Vol. 4 No. 2 (2022): Desember 2022
Publisher : Universitas Islam Negeri Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/afaq.v4i2.5351

Abstract

The determination of the beginning of the lunar month has always been a hot topic of discussion, especially in the months of Ramadan, Shawwal and Zulhijah. The method used to determine the beginning of the lunar month is the reckoning and rukyat methods. The Nurul Hidayah Islamic Boarding School in determining the beginning of the lunar month is quite different from what the government does, namely rukyat tarbi' and badr. The government is currently using Imkanur Rukyat Neo MABIMS. The convergence of rukyat tarbi' and badr with Imkanur Rukyat Neo MABIMS are both methods used to determine the beginning of the lunar month. In its application, different results are obtained. Of the many factors, the most influential is the reckoning used and the standard of the height of the new moon which is quite high.
Correlation Between Hilal Age and Altitude at the Beginning of the Lunar Month (A Critique of the Calculation System in Fath ar-Rauf al-Mannan) Rahma; M. Ihtirozun Ni'am
Astroislamica: Journal of Islamic Astronomy Vol. 3 No. 2 (2024): Astroislamica: Journal of Islamic Astronomy (Desember)
Publisher : Islamic Astronomy Department, Sharia and Law Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47766/astroislamica.v3i2.3369

Abstract

The hilal altitude formulation in the book Fath ar-Rauf al-Mannan is 0.5 of its age value. However, in the practice of modern theory, the calculation of hilal altitude is not that simple but uses a complex formulation of spherical trigonometry. Therefore, it is necessary to conduct research related to the correlation of hilal age and altitude at the beginning of the lunar month to determine the relationship between the two variables as a criticism of the Fath ar-Rauf al-Mannan hilal altitude formulation. The approach used is quantitative with the type of library research. This research uses data on the new moon at the beginning of the lunar month in 1444 H for twelve months (coordinates 6°59'30" N and 110°20'53" E). The hilal age (x variable) and altitude (y variable) were analyzed using simple regression resulting in a correlation equation y = 0.444103449 x – 0.34109308. The result shows that the hilal altitude formulation in the book Fath ar-Rauf al-Mannan is not representative enough, so it has the potential to cause errors in predicting the hilal position. 
Co-Authors Rahma Waliawati, Waliawati