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Ahmad Izzuddin
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alhilal@walisongo.ac.id
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Gedung Dekanat Fakultas Syariah dan Hukum, UIN Walisongo Semarang Jl. Prof. Dr. Hamka, Tambakaji, Kec. Ngaliyan, Kota Semarang, Jawa Tengah 50185
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Al-Hilal: Journal of Islamic Astronomy
Published by Universitas Islam Negeri Walisongo Semarang
ISSN : 27751236     EISSN : 27752119     DOI : https://doi.org/10.21580/al-hilal
Core Subject : Religion, Science, Social,
Religion Astronomy Earth & Planetary Sciences Physics Social Sciences
Al-Hilal Journal is a scientific journal published in April and October per year by the Islamic Astronomy at the Faculty of Sharia and Law, Universitas Islam Negeri (UIN) Walisongo, Semarang colaboration with Asosisasi Dosen Falak Indonesia (ADFI). Articles published in this journal are the results of empirical research in Islamic Astronomy (such as qibla, salat times, Islamic Calendar, Eclipse and others), and its approaching on other area studies (mathematics, physics, astrophysics, social, politics, anthropology, ethnography and others). This journal has specifications as a medium of publication and communication of Islamic Astronomy ideas derived from theoretical and analytical studies, as well as research results in the field of both natural and social science. The editor hopes that writers, researchers and legal experts will contribute in this journal.
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 6 Documents
 1 
Search results for , issue "Vol 3, No 1 (2021)" : 6 Documents clear
THE DISTINCTIONS OF THE BEGINNING PRAYING TIME CALCULATION BY RINTO ANUGRAHA Raizza Kinka Intifada; Ahmad Izzuddin
Al-Hilal: Journal of Islamic Astronomy Vol 3, No 1 (2021)
Publisher : Fakultas Syari'ah dan Hukum UIN Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (357.279 KB) | DOI: 10.21580/al-hilal.2021.3.1.7638

Abstract

Praying (Shalat) is a fundamental ritual for moslem. Moslem must have deep understanding about praying time in doing Shalat. In this era, many astronomy and falak scholars make a guideline or formula of an algorithm of the beginning of praying time calculation. One of them is a physic lecturer from Gajah Mada University who concern about calculation, specifically about Islamic astronomy (Falak). He designs algorithm of the beginning of praying time schedule on his book “Mekanika Benda Langit (Celestial Mechanics)” and his personal blog to access the program of the beginning praying time calculation. This work is a kind qualitative research which use library research method. By using descriptive explanatory method, the author will scrutinize factor which differ the calculation of the beginning praying time by Rinto Anugraha that will be compared to the beginning of praying time by Ministry of Religious Affairs of Indonesia. In this study, the authors analyzed that the solar declination data and the equation of time used were calculated manually by looking for initial data from Julian Day. The program presented in the early Rinto Anugraha prayer time algorithm based on modern astronomy is very friendly for the user. In the implication of hisab, Rinto Anugraha uses a constant sun height of -18 ° for the evening prayer time and -20 ° for the dawn prayer time.
ANALEMMA AND THE BEGINNING OF MAGHRIB PRAYER ALTERATION (Correlation Of Analemma’s Position Towards The Beginning Of Maghrib Prayer According To Ephemeris Calculation) M. Ihtirozun Ni'am; khabib suraya
Al-Hilal: Journal of Islamic Astronomy Vol 3, No 1 (2021)
Publisher : Fakultas Syari'ah dan Hukum UIN Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (700.85 KB) | DOI: 10.21580/al-hilal.2021.3.1.7649

Abstract

Analemmaa is a change of sun’s position which is inconstant when it is observed in certain time and place during a year period. If the change is served as a diagram, it will shape like ‘eight’ number. The beginning of maghrib prayer during a year period is dyanmic at certain time, and it will change due to alteration of sunset.  Therefore, this research aimed to understand the correlation between analemma and the alteration of maghrib prayer schedule. The research uses field research method, which collecting the average of observation data of Sun’s position at the certain time and place during a year period by employing qualitative method. The research found that the alteration of the beginning of maghrib prayer is caused by the analemma’s phenomenon. When the gap between the result of analema’s time observed with maghrib schedule is increased, so the beginning of maghrib prayer is delayed. Yet, when the gap between the result of analema’s time observed with maghrib schedule is decreased, so the beginning of maghrib prayer is sooner.
THE EFFECT OF EL NINO AND LA NINA ON THE INTENSITY OF DETERMINING QIBLA DIRECTION Muhammad Himmatur Riza; Nihayatul Minani
Al-Hilal: Journal of Islamic Astronomy Vol 3, No 1 (2021)
Publisher : Fakultas Syari'ah dan Hukum UIN Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (600.028 KB) | DOI: 10.21580/al-hilal.2021.3.1.7663

Abstract

On the basis of the annual pseudo motion of the Sun, there is a division of the seasons. In terms of seasons, there are several natural phenomena that can affect the seasons on earth, especially the natural phenomena of El Nino and La Nina. In Indonesia, El Nino can result in a longer dry season and La Nina can cause a longer rainy season. Thus, any research related to the influence of El Nino and La Nina is very important to do to determine whether these two natural phenomena affect the intensity of determining the direction of the Qibla. This research is included in the Library Research using qualitative research methods with a descriptive format. Data collection techniques used are documentation or literature and non-participant observation. Meanwhile, to analyze the data, the authors processed the field data obtained from the Class I Semarang Climatology Office to obtain the average climatological elements during the year of El Nino and La Nina, then the results were implemented in determining the direction of the Qibla. This study resulted in the finding that La Nina was sufficient to influence the implementation of determining the direction of the Qibla because at the time of La Nina the rain continued to occur throughout the year.
DIGITALIZATION OF LOCAL RASHDUL QIBLA BY QIBLA DIAGRAM Muhammad Thoyfur
Al-Hilal: Journal of Islamic Astronomy Vol 3, No 1 (2021)
Publisher : Fakultas Syari'ah dan Hukum UIN Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (694.587 KB) | DOI: 10.21580/al-hilal.2021.3.1.7697

Abstract

Determination of the direction of qibla develops all the time, starting from the simple way by using the celestial bodies such as the sun with mathematical formulas, using instrumentation such as compasses, rubu'ul mujayyab, mizwala, istiwa'aini, until using the method of combining mathematical formulas and observation tools into digital methods. One method of determining the direction of qibla is Rashdul Qibla method which has two methods, namely Local Rashdul Qibla and Global Rashdul Qibla. This study utilizes the Local Rashdul Qibla method to become instrumentation called Qibla Diagram, this instrumentation is a combination of mathematical calculation in the Microsoft excel program and diagram of Local Rashdul Qibla. This research is a qualitative research based on exploration. Primary and secondary data collection was carried out by experiment and documentation, processed through three stages, namely codification, presentation and conclusions. Then analyze the data using descriptive analysis with the method of inductive thinking. The research resulted in two findings, there are the Microsoft Excel Qibla Diagram calculation program and the Qibla Diagram instrument. The use of the Qibla Diagram is the same as the use of Local Rashdul Qibla, which is local, but the local of the Qibla Diagram has a large enough extent to cover an area of the city and this instrument, digitally, can be used to determine the local Rashdul Qibla throughout the earth's coordinates
VERIFICATION OF THE HISAB EPHEMERIS SYSTEM AGAINST THE HIJRI CALENDAR LEAP YEAR PATTERN WITH CRITERIA IMKAN AL-RUKYAH MABIMS (Case Study in Kudus District) Fika Afhamul Fuscha
Al-Hilal: Journal of Islamic Astronomy Vol 3, No 1 (2021)
Publisher : Fakultas Syari'ah dan Hukum UIN Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (570.692 KB) | DOI: 10.21580/al-hilal.2021.3.1.7733

Abstract

The hijri istilahi calendar has a 30-year cycle system, wherein 30 years there are 11 leap years and 19 basithoh years. In history, there are 4 kinds of variants in the placement of the leap year. This research aims to determine the leap year pattern of Kudus district in 30 years and to verify which patterns are close to the 4 kinds of variants. This study uses the Library Research method using a descriptive verification approach. This approach provides a sample of the number of days per month for 30 years using the Ephemeris reckoning system by considering the possibility of seeing the new moon based on the criteria of Imkan al-Rukyah MABIMS. If the hilal meets the MABIMS criteria, then the number of days is 29, but if not, then the number of days will be 30. Then, the number of days each month is accumulated annually and is used to verify the number of days each year on the hijriah istilahi calendar. Based on the analysis of the initial month data at the Kudus district headquarters for a period of 30 years, it turns out that in the period of 1411 H to 1440 H, the spread pattern of leap years is closer to pattern IV. There are 5 years whose leap is the same as the IV pattern, namely 2, 8, 16, 24, and 30.
THE ESSENTIALITY OF THE NUSANTARA TRADITIONAL CALENDAR Hikmatul Adhiyah Syam
Al-Hilal: Journal of Islamic Astronomy Vol 3, No 1 (2021)
Publisher : Fakultas Syari'ah dan Hukum UIN Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (405.52 KB) | DOI: 10.21580/al-hilal.2021.3.1.7778

Abstract

Today, tomorrow, yesterday, and later is the time because this life will always talk about the time that can affect the pattern of life in an environment. So that the existence of time becomes important. Based on this, a time system was compiled using the circulation of celestial bodies. Previous people have inherited the traditional calendar in their respective regions. This adapts to the condition of the community and its environment. The research question in this research is how the interpretations of the traditional calendars in the archipelago. The purpose of this research is to explore the essential meaning of the traditional calendars in the archipelago. The method used in this research is library research. This method is used to describe the various existing sources. The results showed that the calendar in each region has its own meaning for the wearer. The Batak calendar is used to determine good and bad days, the Pranatamangsa calendar for season markers, the Saka calendar for marking religious rituals, the Islamic Javanese calendar for historical momentum markers and Islamic teachings, the Bugis calendar for guidelines for daily activities and the Maluku calendar for marking the time of manufacture boat.

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