From a New York Times article about Brooklyn Muslims staying up through the night during Ramadan:
http://www.nytimes.com/2012/07/28/nyregion/celebrating-ramadan-in-new-york-between-fasts.html
On the quiet streets, there are pockets of togetherness. Arab-style coffee shops stay open until 4 a.m., each capturing the feel of a different Middle Eastern country. For teenagers, there are stoops and street corners, and a Greek-owned family doughnut shop that opens at 3 a.m., to give them a place to eat just before the fast begins again at dawn.
...By 3:15 a.m., as some older men drank coffee outside the cafes, a trickle of young teenagers in T-shirts and track pants began to materialize out of the darkness. Jon Kanatarellis, the morning man at Mike's Donuts across the street from the mosque, was ready for them.
His family-run shop, around since 1976, normally opens at 4 a.m. but opens an hour early during Ramadan. "Out of respect," Mr. Kanatarellis, who is not Muslim, said as he laid out the trays of shining doughnuts glazed with chocolate and vanilla icing and decorated with sprinkles. "They are kind of like family."
http://www.nytimes.com/2012/07/28/nyregion/celebrating-ramadan-in-new-york-between-fasts.html