Lubna Turaani has been strategizing for weeks. The 26-year-old nurse and student in Virginia knows that when Daylight Saving Time hits halfway through Ramadan , her carefully constructed routine will need to shift on a dime. So she's planned ahead, temporarily canceling her gym membership and mapping out exactly what kind of food she'll eat to break her fast for the first half of the month. It's the kind of meticulous preparation that millions of American Muslims are undertaking this year.