Shesharao Wanjerkhedetran. 2026. Zeptosecond Birth Time Delay of a Photoelectron Determines Exceedingly Small Quantum Time Kshana or Moment. Indian Journal of Advanced Physics (IJAP). 6, 2 (Oct. 2026), 17–19. DOI:https://doi.org/10.54105/ijap.B1082.06021026.