Metode bulan wah ngelok jelo yang menggabungkan antara hisab urfi kalender Rowot Sasak dan pengamatan fenomena astronomi bulan telah mengikuti matahari pada siang hari, dalam penentuan awal bulan Syawal bertentangan dengan metode umum penentuan awal bulan hijriah. Metode ini bertentangan dengan hisab urfi yang telah memiliki ketentuan yang baku, begitu juga dengan fikih dan astronomi yang menggunakan hisab kontemporer dan pengamatan hilal pada malam hari. Studi ini dimaksudkan untuk menjawab pertanyaan: (1) Bagaimana kedudukan metode bulan wah ngelok jelo dalam penentuan awal bulan Syawal kalender Rowot Sasak? (2) Bagaimana relevansi metode bulan wah ngelok jelo dalam penentuan awal bulan Syawal kalender Rowot Sasak perspesktif fikih dan astronomi? Permasalahan itu dibahas melalui studi kepustakaan dengan pendekatan transdisipliner dan menggunakan analisis deskriptif dan historis untuk menjelaskan dan membandingkan metode bulan wah ngelok jelo dengan metode-metode terkait serta pemahaman sains dan fikh terhadap penentuan awal bulan.
Hasil penelitian menunjukkan bahwa (1) Metode ini berkedudukan sebagai koreksi dalam penentuan awal bulan Syawal kalender Rowot Sasak. Kedudukan metode ini sebagai koreksi karena sesuai dengan pemahaman masyarakat Sasak terhadap gejala alam dan metode penentuan awal bulan seperti pasca terjadinya ijtimak, ijtimak siang hari, dan hilal siang hari. Namun koreksi ini tidak dapat mengubah hisab urfi kalender Rowot Sasak (2) Metode ini relevan dengan fikih dan astronomi karena secara teori memenuhi syarat untuk menjadi patokan dalam penentuan awal bulan hijriah, namun dengan syarat disesuaikan dengan astronomi dan fikih yakni telah terjadi ijtimak pada hari sebelum tanggal 30 Ramadhan kalender Rowot Sasak serta ketinggian hilal cukup tinggi setelah ghurub sehingga memungkinkan hilal terlihat saat itu juga.

ABSTRACT:
The method of the wah ngelok jelo moon which combines the hisab urfi of the Rowot Sasak calendar and the observation of the astronomical phenomenon of the moon has followed the sun during the day, in determining the beginning of the month of Shawwal is contrary to the general method of determining the beginning of the month of Hijri. This method is contrary to the urfi hisab which already has standard provisions, as well as fiqh and astronomy which use contemporary hisab and the observation of the hilal at night. This study is intended to answer the question: (1) What is the position of the wah ngelok jelo moon method in determining the beginning of the month of Shawwal in the Rowot Sasak calendar? (2) What is the relevance of the method of the wah ngelok jelo month in determining the beginning of the month of Shawwal in the Rowot Sasak calendar from a fiqh and astronomical perspective? The problem is discussed through literature studies with an transdisciplinary approach and using descriptive and historical analysis to explain and compare the method of the wah ngelok jelo moon with related methods as well as the understanding of science and fiqh on the determination of the beginning of the month.
The results of the study show that (1) This method is positioned as a correction in determining the beginning of the Shawwal month of the Rowot Sasak calendar. The position of this method as a correction is in accordance with the understanding of the Sasak people of natural phenomena and methods of determining the beginning of the month such as after the occurrence of ijtimak, daytime ijtimak, and daytime hilal. However, this correction cannot change the hisab urfi of the Rowot Sasak calendar (2) This method is relevant to fiqh and astronomy because in theory it is qualified to be a benchmark in determining the beginning of the hijri month, but on the condition that it is adjusted to astronomy and fiqh, namely ijtimak has occurred on the day before the 30th of Ramadan in the Rowot Sasak calendar and the height of the hilal is high enough after ghurub so that it is possible for the hilal to be seen at that time.