No it isn't. Speaking as one who has lived and worked in a muslim country - the first call to prayer (of five) is at sunrise. Even if they were operating at Saudi Time, this would be 5:30 in the morning at the earliest.
Interesting comment on this video:
"My girlfriend is teaching there at an international school. I visited her for a few days. She lives in a high rise apartment. All the call to prayer blasts through the city and blends together, at 4 in the morning none the less! It was all off tune and random frequencies, it sounded like the dead rising from the grave. I thought it was obnoxious, but hey, to each their own I guess.. "