“It is better to pray than to sleep”

The call to prayer sounds five times a day in Istanbul. In the old days, the caller used to cry out from the top of the mosque; these days, the call comes over a loudspeaker. Every mosque issues a call to prayer at approximately–but not precisely–the same time. The call to prayer is calibrated to the movement of the sun, so it's at a slightly different time everyday. The words are the same each time, with the exception of the morning call, which has the added line, “It is better to pray than to sleep.” They really mean this, because the “dawn” call to prayer starts when it's pitch black. Shouldn't “sunrise” prayer have a bit of sun in it? See for yourself (this is just a tiny snippet; if you listen closely, you'll hear overlapping calls from various locations).