Nearly every single mosque or prayer time table web site has different timings, that differ between each other in hours, therefore how would I know whether I am praying too early or not?
Due to the nature of the whether and buildings surrounding me, I am not able to get a clear view of the sun or see the sun at most times.
I wonder if this disagreement with prayer times calculations is derived from our over complication of the matter, as in the time of the Prophet PBUH they did not have the technologies to calculate which degree the sun is at etc.....