Figuring out right calculation method of prayer time
I shifted to uk last year and I have been confused by the fact that people I live with think they are hardcore and correct in Islam and everything and get hot headed when told them to correct e.g. The "Prayer Chart" had timing which was 15 min forward then what time "tv" channel told for iftar or open fast and they made me feel bad about fact that I opened fast quickly while they waited to adhan on tv (which never happened), to which they changed there statement for sher, anyways I wanted to find out more about the calculation time and how we know which one to follow?
Following is a picture of different calculation method. How can one read it to find which is right one for them from where they live and how can one win a argument with people who think they know everything and try to show you less educated in front others, in Islam?
