Prayer Times Angles
Similar type of question was asked by Hasan Ilyas Sahab from Ghamidi Sb. Kindly refer to following video from 1:32:10 to 1:33:18 https://youtu.be/JiDdrYl2sMg?t=5533
As ghamidi sb said differences in time is not a problem. As read on interned, north american relegious society is working on determining better calculation method.