Adhan (Call to Prayer) consists of specific words that inform Muslims about the time of prayer. It is a communal obligation (Fard kifayah) on Muslim men, not women. Adhan and Iqamah are made before offering the five daily prayers and Friday prayer as well.
There are many Prophetic traditions that describe the excellence and virtues of Adhan and those who call to prayer. For example, Mu`awiyah (may Allah be pleased with him) said, I heard the Messenger of Allah (peace be upon him) saying: “The muezzinun (callers to prayer) will have the longest necks on the Day of Resurrection.” (Muslim)
There is a consensus among scholars that the Adhan is not valid before the due time of prayer except in the case of Fajr (Dawn) prayer. A Muslim should be unhurried and make Adhan on its specific time.
Enjoy watching this interesting video to learn more about a common mistake while making the Adhan.