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All Journal Komparatif: Jurnal Perbandingan Hukum dan Pemikiran Islam Azimuth: Journal of Islamic Astronomy
Dwi Aryani, Puput
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Religion Humanities Astronomy Earth & Planetary Sciences Law, Crime, Criminology & Criminal Justice Social Sciences

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Analisis Klasifikasi dan Korelasi Antara Visibilitas Hilal dengan Bujur Perigee dan Apogee Tahun 1300h-1600h Dwi Aryani, Puput
Azimuth: Journal of Islamic Astronomy Vol. 6 No. 1 (2025): Januari
Publisher : Program Studi Ilmu Falak UIN Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15642/azimuth.v6i1.2672

Abstract

This article analyzes the classification and correlation between the longitudes of perigee and apogee with crescent moon visibility to understand the influence of these factors on the determination of the beginning of the lunar month. Primary data sources were obtained from calculated classifications of crescent moon visibility based on the longitudes of perigee and apogee from the years 1300H to 1600H for three locations: Sabang, Surabaya, and Merauke. Secondary data were sourced from Microsoft Excel. Data collection was conducted through documentation by studying the books Lunar Tables and Programs from 4000 B.C. to A.D. 8000 and Astronomical Algorithms, followed by calculations using the Hypertext Preprocessor (PHP) application. The data analysis technique employed was quantitative descriptive analysis. The results reveal a cyclical pattern between the longitudes of perigee and apogee and the maximum elongation of crescent moon visibility in Sabang, Surabaya, and Merauke. Within the perigee longitude range (15°–345°), the highest maximum elongations were recorded: 12.12° in Sabang, 11.33° in Surabaya, and 11.56° in Merauke, which then declined as they approached the apogee longitude range (165°–195°). The maximum elongation increased again as it moved away from apogee, forming a recurring cycle between perigee and apogee. However, correlation results show no significant relationship between crescent moon visibility and the longitudes of perigee and apogee, as indicated by the low R-square values (0.0005 and 0.0011, respectively). These findings suggest that the longitudes of perigee and apogee are not reliable parameters for determining crescent moon visibility.
Tinjauan Undang-Undang Nomor 1 Tahun 1974 dan KHI Terhadap Praktik Peminangan Adat Minangkabau Dwi Aryani, Puput; Rahmat, Sulthon
Komparatif: Jurnal Perbandingan Hukum dan Pemikiran Islam Vol. 3 No. 1 (2023): Juni
Publisher : Department of Comparative Mazhab Comparative, Fakulty of Shariah and Law

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15642/komparatif.v3i1.1702

Abstract

This paper aims to find out how Law No. 1 of 1974 and KHI view the Minangkabau Traditional Engagement Practice. This is based on the behavior and opinions of some people who are pro and contra to this engagement practice. The author finds that these two attitudes seem to contradict each other and are sometimes in line with the applicable law. Where the pro opinion tends to the order of community life based on applicable customary law, while the contra opinion tends to the UUP and KHI whose regulations are sometimes not in line with Minangkabau customary rules. This research is expected to provide an understanding of the legal dualism of Minangkabau customary engagement practices. This research uses a literature study with the object of research is the application of Minangkabau customary marriage practices. From this research it can be concluded that, the Minangkabau customary engagement practice uses a matrilineal system whose customary rules are not in line with KHI. However, this does not cause a decline in its existence, there are still many young people who still uphold their original culture and are not eroded by the times.
Co-Authors Rahmat, Sulthon