When should I break the fast for iftar when I can hear multiple adhans at different times?

I live in an area where there are multiple masjids in the vicinity. Adhan can be heard from all the masjids, but the adhans are called at different times. The last one I hear is almost after the completion of first adhan I hear. In such a situation which adhan should I consider for making and breaking fast? Currently I am relying on the first adhan which I hear and it is not from the nearest masjid. But it's the Juma masjid I go to on Fridays.