Dear Sujan Prasad Gautam According to Kamstra et al. (2003), during the earth's seasonal alternation, the regular light period in a specific area can be different, and the duration of the day and night shifts can influence the human body's internal rhythm, influencing investor trading behavior. As a result, it is of interest to investigate whether targeted causality has a semiannual effect comparable to geomagnetic activity. Please go through this:
Kamstra, M. J., Kramer, L. A., & Levi, M. D. (2003). Winter blues: A SAD stock market cycle. American Economic Review, 93(1), 324-343.
Pustil’nik, L.A., Din, G.Y. Influence of solar activity on the state of the wheat market in medieval England. Sol Phys 223, 335–356 (2004). https://doi.org/10.1007/s11207-004-5356-5
Love, J. J., 2013. On the insignificance of Herschel’s sunspot correlation, Geophys. Res. Lett., 40(16), 4171-4176, doi:10.1002/grl.50846. Article On the insignificance of Herschel's sunspot correlation