Seeking the exact time of Salah

Q: The Imam (the one who leads congregational Prayer) and the Mu'adhin (caller to Prayer) of our Masjid (mosque) are the same person. He is doing a great job (although none can verify this but Allah). However, he often hastens the Adhan (call to Prayer), especially in Ramadan. Once he hears the radio announces that the Adhan is about to be aired live from Al-Masjid Al-Haram (the Sacred Mosque in Makkah), he immediately pronounces it even before it is pronounced in Al-Haram. When we tell him of that matter, he says that the sun sets five minutes before the time of the Adhan in Al-Haram, claiming that he and others have witnessed that many times at the seashore. He quotes as supporting evidence the Hadith in which the Messenger (peace be upon him) said: When night falls from this side and the day vanishes from this side and the sun sets, the fasting person should break their Sawm (Fast). He quotes other reported Hadith pertaining to the preference of hastening to break Sawm. Please advise us in this regard. May Allah reward you.

A: It is not permissible for the Mu'adhin to pronounce the Adhan once he hears the radio announcer saying that the Adhan will be aired from Al-Masjid Al-Haram, because this does not indicate the beginning of the Adhan but rather the approach of its due time. The Mu'adhin is not permitted to pronounce the Adhan unless he is sure that the prescribed time of the obligatory Salah (Prayer) is due. It is also permissible for him, if he is in Makkah and the Adhan of (Part No. 5; Page No. 66) Al-Masjid Al-Haram is aired live on that day, to pronounce the Adhan in his Masjid upon hearing that of Al-Masjid Al-Haram, but not before that.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.