Rosad, S., Yudhana, A., & Fadlil, A. (2019). Jadwal Sholat Digital Menggunakan Metode Ephemeris Berdasarkan Titik Koordinat Smartphone. IT Journal Research and Development, 3(2), 30–43. https://doi.org/10.25299/itjrd.2019.vol3(2).2285