Anisa, K., Dwiridal, L., Amir, H. and Hidayati, H. 2026. The Sun’s Influence on Extreme Weather: A Study of Solar Declination and Sunlight Intensity on Rainfall Extremes in West Sumatra, July–December 2025. KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA. 11, 01 (Aug. 2026), 83-92. DOI:https://doi.org/https://doi.org/10.20414/konstan.v11i01.956.