Tap the bell to turn the Azan on or off for that prayer.
Times are calculated in your browser with Adhan (open-source, MIT licence by Batoul Apps), the same calculation library used by the SiraatOne Azan app, so both show the same times for the same settings.
Calculation method sets the sun angles for Fajr and Isha used by each authority. Choose the one used by the mosques where you live.
Asr: Standard (Shafiʿi, Maliki, Hanbali) begins when an object's shadow equals its length; Hanafi when the shadow is twice its length.
High latitudes: for places where twilight does not end in summer, Fajr and Isha use a portion of the night.
Other times: Ishraq / Duha is shown from 20 minutes after sunrise until 10 minutes before Dhuhr, and voluntary prayer is avoided after sunrise, at zawal and before sunset (the same safety margins as the SiraatOne Azan app). The night runs from Maghrib to the next Fajr; Qiyam al-Layl is shown at the start of its last third.
Calculated times are estimates. Always follow your local mosque or Islamic authority when they differ.