Malo, Erina Putri, et al. “The Criterion of the Sun’s Height in the Determination of Early Fajr Time of Jurisprudence and Astronomical Perspectives”. HISABUNA: Jurnal Ilmu Falak, vol. 4, no. 3, Dec. 2023, pp. 47-64, doi:10.24252/hisabuna.v4i3.36971.